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Home> Encyclopedia > Hot Product Listed S   > Silicon
7440-21-3 structure

Silicon

Iupac Name:silicon
CAS No.:7440-21-3
EINECS(EC#): 231-130-8
Molecular Weight:28.0855
Names and Identifiers
Synonyms

, N-type, contains No dopant, diam. x thickness 2 in. x 0.5 mm , N-type, contains No dopant, diam. x thickness 3 in. x 0.5 mm , N-type, contains phosphorus as dopant, diam. x thickness 2 in. x 0.5 mm , N-type, contains phosphorus as dopant, diam. x thickness 3 in. x 0.5 mm , N-type, diam. x thickness 2 in. x 0.5 mm , P-type, contains boron as dopant, diam. x thickness 2 in. x 0.3 mm , P-type, contains boron as dopant, diam. x thickness 2 in. x 0.5 mm , P-type, contains boron as dopant, diam. x thickness 3 in. x 0.5 mm 100> 111> 14Si 7440-21-3 803S625 8990AF AC1NUU7K AKOS004909675 AKOS024438062 AN-19417 ANW-36474 CCRIS 6599 CCRIS 6831 CHEBI:27573 CTK2H7835 DB12982 Defoamer S-10 EC 231-130-8 EC 232-263-4 EINECS 231-130-8 EINECS 232-263-4 Flots 100SCO HSDB 5033 HSDB 6351 I14-60155 KS-0000117C KSC377Q3L LS-145138 LS-145326 MFCD00085311 Monodispersed silicon nanowires Nanode-40 NanoFET NanoFET-PIP Polydispersed silicon nanowires Polydispersed silicon nanowires, D x L 40 nm x 1-20 mum Polyeristalline silicon powder Polysilicon, monocrystalline silicon, Silicon ingots RTR-024033 SC-66876 Si Silane, compressed Silane, compressed [UN2203] [Flammable gas] Silane, compressed [UN2203] [Flammable gas] silicio silicium Silicon (3 oxygen levels) Silicon (low oxygen) Silicon (Si), >98% Silicon 99.999% polycrystalinedisc and sputtering targets available also silicon atom Silicon chips Silicon chips (99.9999%) silicon coating quality balzers Silicon dust Silicon granular, virgin poly fines Silicon lump, 0.1-2.5cm (0.04-1.0in) Silicon lump, 10cm (3.9in) & down Silicon lump, 15cm (5.9in) & down Silicon metal Silicon metal powder Si GRADE AX 05 (H.C. STARCK) Silicon metal powder Si GRADE AX 10 (H.C. STARCK) Silicon metal powder Si GRADE AX 20 (H.C. STARCK) Silicon metal, NIST(R) SRM(R) 57b Silicon Monocrystalline Silicon Optical Window, 25.4mm (1.0in) dia x 1mm (0.04in) thick Silicon Optical Window, 25.4mm (1.0in) dia x 2mm (0.08in) thick Silicon Optical Window, 50.8mm (2.0in) dia x 1mm (0.04in) thick Silicon Optical Window, 50.8mm (2.0in) dia x 2mm (0.08in) thick Silicon plate, 12.5mm (0.5in) thick Silicon plate, 6.35mm (0.25in) thick Silicon plate, 9.5mm (0.37in) thick Silicon powder Silicon powder (amorphous) Silicon powder (nanocrystalline) Silicon powder, amorphous Silicon powder, amorphous [UN1346] [Flammable solid] Silicon powder, amorphous [UN1346] [Flammable solid] Silicon powder, crystalline, -100 mesh Silicon powder, crystalline, -100+200 mesh Silicon powder, crystalline, -100+325 mesh Silicon powder, crystalline, -325 mesh Silicon powder, crystalline, APS <=50nm Silicon powder, crystalline, APS c=100nm Silicon powder, nodular, APS 1-5 micron Silicon random pieces Silicon random pieces (99.5%) Silicon rod, 0.828cm (0.326in) dia Silicon rod, 2.5cm (0.98in) dia Silicon rod, 5.08cm (2.0in) dia Silicon rod, polycrystalline, unpolished, 1.6cm (0.6in) dia Silicon slugs, 9.5mm (0.375in) dia x 9.5mm (0.375in) length Silicon solution 1000 ppm Silicon sputtering target, 50.8mm (2.0in) dia x 3.18mm (0.125in) thick Silicon sputtering target, 50.8mm (2.0in) dia x 6.35mm (0.250in) thick Silicon sputtering target, 76.2mm (3.0in) dia x 3.18mm (0.125in) thick Silicon sputtering target, 76.2mm (3.0in) dia x 6.35mm (0.250in) thick Silicon standard for AAS, ready-to-use, in HNO3: HF Silicon standard solution, for AAS, 1 mg-ml Si in 2% NaOH Silicon wafer orientation Silicon wafer orientation P-doped Silicon, 99.0% SILICON, 99.85% Silicon, 99+%, powder, -325 mesh Silicon, AAS standard solution, Specpure(R), Si 1000microg/ml silicon, containing by weight not less than 99.99 % of silicon Silicon, containing more than 99.99 per cent by weight of silicon Silicon, CP Silicon, disks, 13mm, thickness 0.38mm, single crystal, 100% Silicon, disks, 15.9mm, thickness 0.38mm, single crystal, n-type, 100% Silicon, elemental Silicon, lump, 25 mm max. lump size, weight 100 g, purity 99.95% Silicon, lump, 25 mm max. lump size, weight 100 g, purity 99.99% Silicon, lump, 25 mm max. lump size, weight 100 g, purity 99.999% Silicon, lump, 25 mm max. lump size, weight 200 g, purity 99.95% Silicon, lump, 25 mm max. lump size, weight 200 g, purity 99.99% Silicon, lump, 25 mm max. lump size, weight 200 g, purity 99.999% Silicon, lump, 25 mm max. lump size, weight 50 g, purity 99.95% Silicon, lump, 25 mm max. lump size, weight 50 g, purity 99.99% Silicon, lump, 25 mm max. lump size, weight 50 g, purity 99.999% Silicon, lump, 25 mm max. lump size, weight 500 g, purity 99.95% Silicon, lump, 25 mm max. lump size, weight 500 g, purity 99.99% Silicon, lump, 5 mm max. lump size, weight 100 g, purity 99.99% Silicon, lump, 5 mm max. lump size, weight 200 g, purity 99.99% Silicon, lump, 5 mm max. lump size, weight 50 g, purity 99.99% Silicon, lump, 5 mm max. lump size, weight 500 g, purity 99.99% Silicon, nanopowder, <100 nm (BET), <3% oxygen passivation Silicon, nanopowder, <100 nm particle size (TEM), >=98% trace metals basis Silicon, NIST(R) SRM(R) 640e, powder, line position and line shape standard for powder diffraction Silicon, Oil based standard solution, Specpure(R), Si 1000microg/g Silicon, Oil based standard solution, Specpure, Si 5000g/g Silicon, pieces, 99.95% trace metals basis Silicon, plasma standard solution, Specpure(R), Si 10,000microg/ml Silicon, plasma standard solution, Specpure(R), Si 1000microg/ml Silicon, powder, 150 max. part. size (micron), weight 1000 g, purity 97.5% Silicon, powder, 150 max. part. size (micron), weight 200 g, purity 97.5% Silicon, powder, 150 max. part. size (micron), weight 2000 g, purity 97.5% Silicon, powder, -325 mesh, 99% trace metals basis Silicon, powder, 45 max. part. size (micron), purity 99.95%, weight 200 g Silicon, powder, 45 max. part. size (micron), weight 10 g, high purity 99.999% Silicon, powder, 45 max. part. size (micron), weight 100 g, high purity 99.998% Silicon, powder, 45 max. part. size (micron), weight 100 g, purity 99.95% Silicon, powder, 45 max. part. size (micron), weight 20 g, high purity 99.998% Silicon, powder, 45 max. part. size (micron), weight 50 g, purity 99.5% Silicon, powder, 45 max. part. size (micron), weight 50 g, purity 99.95% Silicon, powder, -60 mesh, 99.999% trace metals basis Silicon, powder, max. particle size 150 micron, weight 100 g, purity 97.5% Silicon, powder, max. particle size 150 micron, weight 500 g, purity 97.5% Silicon, powder, max. particle size 45 micron, weight 100 g, purity 99.5% Silicon, powder, max. particle size 45 micron, weight 200 g, purity 99.5% Silicon, powder, max. particle size 45 micron, weight 50 g, high purity 99.998% Silicon, rod, 100mm, diameter 10.0mm, single crystal - random orientation, 100% Silicon, rod, 100mm, diameter 12.7mm, single crystal - random orientation, 100% Silicon, rod, 100mm, diameter 2.0mm, crystalline, 100% Silicon, rod, 100mm, diameter 25mm, crystalline, 100% Silicon, rod, 100mm, diameter 5.0mm, crystalline, 100% Silicon, rod, 10mm, diameter 2.0mm, crystalline, 100% Silicon, rod, 20 mm diameter, length 50 mm, purity 99.999% Silicon, rod, 20 mm diameter, length 80 mm, purity 99.999% Silicon, rod, 25 mm diameter, length 150 mm, purity 99.999% Silicon, rod, 25mm, diameter 2.0mm, crystalline, 100% Silicon, rod, 25mm, diameter 3.15mm, single crystal - random orientation, 100% Silicon, rod, 40mm, diameter 20mm, single crystal, -100, 99.999% Silicon, rod, 40mm, diameter 20mm, single crystal, -111, 99.999% Silicon, rod, 50mm, diameter 2.0mm, crystalline, 100% Silicon, rod, 50mm, diameter 3.15mm, single crystal - random orientation, 100% Silicon, rod, 50mm, diameter 5.0mm, crystalline, 100% Silicon, rod, 50mm, diameter 5mm, single crystal, -100, 99.999% Silicon, rod, 50mm, diameter 5mm, single crystal, -111, 99.999% Silicon, rod, 50mm, diameter 6mm, single crystal, -111, 99.999% Silicon, rod, 80mm, diameter 20mm, single crystal, -100, 99.999% Silicon, rod, length 100 mm, 20 mm diameter, purity 99.999% Silicon, sheet, 10x10mm, thickness 0.5mm, single crystal, -100, 100% Silicon, sheet, 10x10mm, thickness 0.6mm, single crystal, -100, 100% Silicon, sheet, 14x14mm, thickness 1.0mm, single crystal, -100, 100% Silicon, sheet, 14x14mm, thickness 1.0mm, single crystal, -111, 100% Silicon, sheet, 25x25mm, thickness 1.0mm, polycrystalline, 99.999% Silicon, sheet, 25x25mm, thickness 1.0mm, single crystal, -100, 100% Silicon, sheet, 40x40mm, thickness 3.0mm, single crystal, p-type, 100% Silicon, sheet, 52x52mm, thickness 1.0mm, polycrystalline, 99.999% Silicon, single crystal, -100, n-type, phosphorus doped, diameter 150mm, length 0.65mm, 100% Silicon, single crystal, -100, n-type, phosphorus doped, diameter 76.2mm, length 0.38mm, 100% Silicon, single crystal, -100, n-type, phosphorus doped, diameter 76.2mm, length 2.0mm, 100% Silicon, single crystal, -100, p-type, boron doped, diameter 76.2mm, length 0.38mm, 100% Silicon, single crystal, -111, n-type, phosphorus doped, diameter 76.2mm, length 0.38mm, 100% Silicon, single crystal, -111, n-type, phosphorus doped, diameter 76.2mm, length 0.50mm, 100% Silicon, single crystal, -111, n-type, phosphorus doped, diameter 76.2mm, length 0.75mm, 100% Silicon, single crystal, -111, p-type, boron doped, diameter 57mm, length 1.0mm, 100% Silicon, single crystal, -111, p-type, boron doped, diameter 76.2mm, length 0.38mm, 100% Silicon, Single Crystal, -111, size, thickness 0.4 mm Silicon, sphere, 0.48 mm diameter, 10_pcs, tolerance +/-2.5um Silicon, sphere, 0.48 mm diameter, 20 pcs, tolerance +/-2.5um Silicon, sphere, 0.48 mm diameter, 50 pcs, tolerance +/-2.5um Silicon, sphere, 10pcs, diameter 2.0mm, precision sphere grade 25 Silicon, sphere, 20pcs, diameter 2.0mm, precision sphere grade 25 Silicon, sphere, 50pcs, diameter 2.0mm, precision sphere grade 25 Silicon, sputtering target, diam. x thickness 2.00 in. x 0.25 in., 99.999% trace metals basis Silicon, wafer (single side polished), < Silicon, wafer (single side polished), contains phosphorus as dopant, < Silicon, wafer, < SiliconchipsNmm Silicone SiliconpowderNmesh SiliconrandompiecesNcm Siliconwafer Siliconwaferorientation Silizium TR-024033 TRA0073852 UN1346 UN2203 UNII-5J076063R1 UNII-Z4152N8IUI Z4152N8IUI

Inchi
InChI=1/Si
InChkey
XUIMIQQOPSSXEZ-UHFFFAOYSA-N
Canonical Smiles
[Si]
Isomers Smiles
[Si]
Properties
Appearance
silver-gray solid.
Density
2.33
Melting Point
1410℃
Boiling Point
2355℃
Vapour
0 mm Hg (approx) (NIOSH, 2016)
Flash Point
°C
Solubility
INSOLUBLE in water
Color/Form
Colorless gas
Stability
Stable. Fine powder is highly flammable. Incompatible with oxidizing agents, bases, carbonates, alkali metals, lead and aluminium oxides, halogens, carbides, formic acid.
HS Code
2804690000
Storage temp
Flammables area
Spectral properties
MASS: 3977 (National Bureau of Standards EPA-NIH Mass Spectra Data Base, NSRDS-NBS-63)
Safety and Handling
Hazard Codes
F
Risk Statements
R11
Safety Statements
S16;S33;S7/9
HazardClass
4.1
Safety

A nuisance dust. Moderately toxic by ingestion. An eye irritant. Does not occur freely in nature, but is found as silicon dioxide (silica) and as various silicates. Elemental Si is flammable when exposed to flame or by chemical reaction with oxidizers. Violent reactions with alkali carbonates, oxidants, (Al + PbO), Ca, Cs2C2, Cl2, CoF2, F2, IF5, MnF3, Rb2C2, FNO, AgF, NaK alloy. When heated it will react with water or steam to produce H2; can react with oxidizing materials.
Hazard Codes:?ToxicT,FlammableF
Risk Statements: 11?
R11:Highly flammable.
Safety Statements: 26-36/37-45-7/9-33-16-36?
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.?
S36/37:Wear suitable protective clothing and gloves.?
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)?
S7:Keep container tightly closed.?
S9:Keep container in a well-ventilated place.?
S33:Take precautionary measures against static discharges.?
S16:Keep away from sources of ignition.?
S36:Wear suitable protective clothing.
RIDADR: UN 2922 8/PG 2
WGK Germany: 2
RTECS: VW0400000
TSCA: Yes
HazardClass: 4.1
PackingGroup: III

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD50 oral 3160mg/kg (3160mg/kg) ? FAO Nutrition Meetings Report Series. Vol. 53A, Pg. 21, 1974.
rat LDLo intraperitoneal 500mg/kg (500mg/kg) SENSE ORGANS AND SPECIAL SENSES: OTHER CHANGES: OLFACTION

SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE

LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION
National Technical Information Service. Vol. OTS0536164,

PackingGroup
III
Skin, Eye, and Respiratory Irritations
Irritating to respiratory tract.
Avoid contact with skin and eyes. /Silanes/
Irritating to the skin, eyes, and respiratory system.
... /Silane/ irritates the eyes, the skin and the respiratory tract. Rapid evaporation of the liquid may cause frostbite.
Cleanup Methods
Evacuate danger area! Consult an expert! Ventilation. Remove gas with fine water spray (extra personal protection: self-contained breathing apparatus).
Stop or control the leak, if this can be done without undue risk. Use water spray to cool and disperse vapors and protect personnel. Releases may ignite spontaneously.
Transport
UN 2922 8/PG 2
Fire Fighting Procedures
Use fine spray or fog to control fire by preventing its spread and absorbing some of its heat. Stop flow of gas before extinguishing fire. Use water spray to keep fire-exposed containers cool. Do not use halocarbons. Explosive decomposition may occur under fore conditions. Fight fire from protected location or maximum possible distance. Approach fore from upwind to avoid hazardous vapors and toxic decomposition products.
If material on fire or involved in fire: Do not extinguish fire unless flow can be stopped. Do not apply water to point of leak in tank car or container. Use water in flooding quantities as fog. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use "alcohol" foam, dry chemical or carbon dioxide.
Evacuation: If fire becomes uncontrollable or container is exposed to direct flame - consider evacuation of one-third (1/3) mile radius.
Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out; in other cases extinguish with powder, carbon dioxide.
Fire Potential
Silicone hydride will ignite in air by slightly raising the temp or lowering the pressure.
... /Silane/ is mildly endothermic ... Pure material is said not to ignite in air unless the temp be incr or the pressure reduced. Presence of other hydrides as impurities causes ignition always to occur on contact. However, 99.95% pure material, even at concn down to 1% in hydrogen and/or nitrogen, ignites in contact with air unless emerging at very high gas velocity, when mixtures with up to 10% silane content may not ignite. Silane from a cylinder at 24 bar contained inside a ventilated cabinet inadvertently flowed back to the low pressure side of a nitrogen cylinder regulator outside the cabinet. When the regulator failed, the leaking silane ignited and burned outside the cabinet, preventing access to the main silane valve, and the leak reignited after extinguishing the fire. The system has been redesigned to eliminate the problems.
Pyrophoric. Flammable gas. Low ignition energy ...
Extremely flammable ... /Silane/ decomposes on heating or on burning producing silicon and hydrogen, causing fire and explosion hazard ...
Formulations/Preparations
The composition of the silane mixture is 40 wt% silicone tetrahydride, 30 wt% silicon hydride, 15 wt% trisilane, & 15 wt% higher silanes.
DOT Emergency Guidelines
/GUIDE 116: GASES - FLAMMABLE (UNSTABLE)/ Fire or Explosion: EXTREMELY FLAMMABLE. Will be easily ignited by heat, sparks or flames. Will form explosive mixtures with air. ... Those substances designated with a "P" may polymerize explosively when heated or involved in a fire. Vapors from liquefied gas are initially heavier than air and spread along ground. Vapors may travel to source of ignition and flash back. Cylinders exposed to fire may vent and release flammable gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket.
/GUIDE 116: GASES - FLAMMABLE (UNSTABLE)/ Health: Vapors may cause dizziness or asphyxiation without warning. Some may be toxic if inhaled at high concentrations. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire may produce irritating and/or toxic gases.
/GUIDE 116: GASES - FLAMMABLE (UNSTABLE)/ Public Safety: CALL Emergency Response Telephone Number ... . As an immediate precautionary measure, isolate spill or leak area for at least 100 meters (330 feet) in all directions. Keep unauthorized personnel away. Stay upwind. Many gases are heavier than air and will spread along ground and collect in low or confined areas (sewers, basements, tanks). Keep out of low areas.
/GUIDE 116: GASES - FLAMMABLE (UNSTABLE)/ Protective Clothing: Wear positive pressure self-contained breathing apparatus (SCBA). Structural firefighters' protective clothing will only provide limited protection.
/GUIDE 116: GASES - FLAMMABLE (UNSTABLE)/ Evacuation: Large spill: Consider initial downwind evacuation for at least 800 meters (1/2 mile). Fire: If tank, rail car or tank truck is involved in a fire, ISOLATE for 1600 meters (1 mile) in all directions; also, consider initial evacuation for 1600 meters (1 mile) in all directions.
/GUIDE 116: GASES - FLAMMABLE (UNSTABLE)/ Fire: DO NOT EXTINGUISH A LEAKING GAS FIRE UNLESS LEAK CAN BE STOPPED. Small fires: Dry chemical or CO2. Large fires: Water spray or fog. Move containers from fire area if you can do it without risk. Fire involving tanks: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Do not direct water at source of leak or safety devices; icing may occur. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles, if this is impossible, withdraw from area and let fire burn.
/GUIDE 116: GASES - FLAMMABLE (UNSTABLE)/ Spill or Leak: ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). All equipment used when handling the product must be grounded. Stop leak if you can do it without risk. Do not touch or walk through spilled material. Do not direct water at spill or source of leak. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. If possible, turn leaking containers so that gas escapes rather than liquid. Prevent entry into waterways, sewers, basements or confined areas. Isolate area until gas has dispersed.
/GUIDE 116: GASES - FLAMMABLE (UNSTABLE)/ First Aid: Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with liquefied gas, thaw frosted parts with lukewarm water. In case of burns, immediately cool affected skin for as long as possible with cold water. Do not remove clothing if adhering to skin. Keep victim warm and quiet. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves.
Reactivities and Incompatibilities
... Attacked by water in the presence of even minute traces of hydroxyl ion to evolve hydrogen and form silicic acid or hydrated silicon dioxide. The reaction with water is further accelerated by larger amt of inorganic or organic bases.
Halogens (bromine, chlorine, carbonyl chloride, antimony pentachloride, tin(IV) chloride), water.
Can react with oxidizing materials.
Silane burns in contact with bromine, chlorine or covalent chlorides (carbonyl chloride, antimony pentachloride, tin(IV) chloride, etc). Extreme caution is necessary when handling silane in systems with halogenated cmpd, as a trace of free halogen may cause violent explosions.
Very pure silane does not immediately explode with oxygen, but the decomposition products may ignite after a delay. Mixtures of silane with 30% oxygen are metastable and potentially explosive under all pressure conditions studied, and become explosive at above 80 deg C. Addition of a few % of disilane renders the mixtures much more explosive, and mechamisms are proposed.
Silane and chlorosilanes can explode when mixed with various halocarbons and ignited.
Silicone hydride will ignite in air by slightly raising the temp or lowering the pressure.
Nitrous oxide contaminated silane cylinder exploded as it was being vented.
... /Silane/ is a strong reducing agent and reacts with oxidants. Reacts slowly with water. Reacts with potassium hydroxide solution and halogens.
Silicon hydride ignites in a chlorine atmosphere.
... /Silane/ is mildly endothermic ... Pure material is said not to ignite in air unless the temp be incr or the pressure reduced. Presence of other hydrides as impurities causes ignition always to occur on contact. However, 99.95% pure material, even at concn down to 1% in hydrogen and/or nitrogen, ignites in contact with air unless emerging at very high gas velocity, when mixtures with up to 10% silane content may not ignite. Silane from a cylinder at 24 bar contained inside a ventilated cabinet inadvertently flowed back to the low pressure side of a nitrogen cylinder regulator outside the cabinet. When the regulator failed, the leaking silane ignited and burned outside the cabinet, preventing access to the main silane valve, and the leak reignited after extinguishing the fire. The system has been redesigned to eliminate the problems.
Presence of the alkene /eg cis-2-butene/ delays or prevents spontaneous ignition of silane-air mixtures.
Other Preventative Measures
CAUTION: Silanes are toxic. Avoid contact with skin and eyes. Use effective fume removal device. /Silanes/
SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.
Personnel protection: Avoid breathing vapors. Keep upwind. ... Avoid bodily contact with the material. Do not handle broken packages unless wearing appropriate personal protective equipment. Wash away any material which may have contacted the body with copious amounts of water or soap and water.
Evacuation: ... If material leaking (not on fire) consider evacuation from downwind area based on amount of material spilled, location and weather conditions.
If material not on fire and not involved in fire: Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors.
The chlorination of the lower silanes by halogenated solvents /eg, chloroform or carbon tetrachloride/ proceeds explosively in presence of oxygen, but catalytic presence of aluminium chloride controls the reaction.
NO open flames, NO sparks, and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting. STRICT HYGIENE ... local exhaust, or breathing protection.
SRP: Local exhaust ventilation should be applied wherever there is an incidence of point source emissions or dispersion of regulated contaminants in the work area. Ventilation control of the contaminant as close to its point of generation is both the most economical and safest method to minimize personnel exposure to airborne contaminants.
Protective Equipment and Clothing
Cold-insulating gloves. Safety goggles, or eye protection in combination with breathing protection.
Wear full protective clothing and positive pressure self-contained breathing apparatus.
Specification

? Silicon (CAS NO.7440-21-3), its Synonyms are Defoamer S-10 ; Polyeristalline silicon powder ; Silicon metal ; UNII-Z4152N8IUI ; Silicon, containing more than 99.99 per cent by weight of silicon ; Silicone . It is grey lustrous solid or grey powder.

Report

Reported in EPA TSCA Inventory.

Disposal Methods
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.
MSDS

2.Hazard identification

2.1 Classification of the substance or mixture

Not classified.

2.2 GHS label elements, including precautionary statements

Pictogram(s) No symbol.
Signal word

No signal word.

Hazard statement(s)

none

Precautionary statement(s)
Prevention

none

Response

none

Storage

none

Disposal

none

2.3 Other hazards which do not result in classification

none

Precursor and Product
Computational chemical data
  • Molecular Weight:28.0855g/mol
  • Molecular Formula:Si
  • Exact Mass:27.976927
  • Monoisotopic Mass:27.976927
  • Complexity:0
  • Rotatable Bond Count:0
  • Hydrogen Bond Donor Count:0
  • Hydrogen Bond Acceptor Count:0
  • Topological Polar Surface Area:0
  • Heavy Atom Count:1
  • Defined Atom Stereocenter Count:0
  • Undefined Atom Stereocenter Count:0
  • Defined Bond Stereocenter Count:0
  • Undefined Bond Stereocenter Count:0
  • Isotope Atom Count:0
  • Covalently-Bonded Unit Count:1
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