Silicon (cas 7440-21-3) Molecular Structure

CAS No. 7440-21-3 (Silicon )

Molecular Formula: SiMolecular Weight: 28.08

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    DetailDesc: Item Specification Purity >99.5% Test element Al,Ca,Fe,C,O, Al(w%) 0.12 Ca(w%) 0.0042 Fe(w%) 0.18 C(w%) 0.028 O(w%) 0.18

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    Purity:99 Min. Order:1/Kilogram Supply Ability:100 Year/Metric Ton

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    Updatetime:Jan 16 2018

    FOB Price:10 USD/Kilogram Purity:99% Min. Order:1000/Kilogram Supply Ability:60000 Month/Kilogram

    DetailDesc: metal silicon 3303 CAS: 7440-21-3 Specifications Silicon metal : model NO :441, 553, 1101, 2202, 3303 Si>99% Fe:0.30%max, Al:0.30%max Specifications Silicon metal 3303: Si>99% Fe:0.30%max, Al:0.30%max Ca:0.03%max, P:50ppm Silicon metal 3303: Si>99% Fe:0.30%max, Al:0.30%...

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    Updatetime:Nov 28 2016

    FOB Price:1500 USD/Metric Ton Purity:99% Min. Order:18/Metric Ton Supply Ability:100 Quarter/Metric Ton

    DetailDesc: Specification Type CONTENT Si(≥ ) Fe(≤ ) Al(≤ ) Ca(≤ ) Silicon metal 2202 99 0.2 0.2 0.02 Silicon metal 2205 99 0.2 0.5 0.02 Silicon metal 3303 99 0.3 0.3 0.03 Silicon metal 331 99 0.3 0.3 0.1 Silicon metal 441 99 0.4 0.4 0.1 Silicon metal 553 98.5 0.5 0.5 0.3

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    DetailDesc: Specifications 2502, 2202, 3303, 421, 441, 553 The other specification can be supplied upon customer’s demand. Main Applications 1. Aluminum Alloy 2. Solar Energy

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  • Silicon

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    Introduction:BOCSciencesisachemistrydivisionofCDIncthathasestablisheditsheadquartersinNewYorkState,USA.AtCDInc,weprovideafullrangeofCROservicesthatcovertheentiredrugdevelopmentpipeline,includingcontractresearchfortargetidentification,buildingblocks,compoundsynthesis,biochemicalandcellularanalysis,preclinicalanimaltest,clinicalstudyaswellasmanufacturingandmarketingresearch.Currently,BOCScienceshasawiderangeofbu...

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  • Pourable Mold Silicone Rubber for Shoe Mold Making

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    DetailDesc: Features of Pourable mold Silicone rubber for Shoe Mold Making: Shoes mould Making RTV-2 Silicone Rubber is a two-component material, and RTV-2 silicone rubber is consisted of Part A silicone base and Part B CA30 curing agent, and the silicone base and curing agent can cure at r...

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  • Silicon ingot

    Updatetime:Oct 12 2013

    FOB Price:1500 USD/Metric Ton Purity:99.90%-99.99% Min. Order:20/Metric Ton Supply Ability:500 Month/Metric Ton

    DetailDesc: S-K-Y-P-E:alice.chen601 ITEM STANDARD RESULT Cu 99.99% MIN Bi 0.0002% MAX Se 0.0002% MAX Te 0.0002% MAX Sb 0.0004% MAX As 0.0005% MAX P 0.001% MAX Pb 0.0005% MAX S 0.0015% MAX Sn 0.001% MAX Ni 0.001% MAX Fe 0.001% MAX Zn 0.001% MAX Ag 0.002% MAX COMMENT:QUALIFIED .THE ITEM TESTE...

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    Wuhan Meilongda Chemical Co., Ltd

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  • Silicon Metal

    Updatetime:Sep 05 2013

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    Introduction:BeijingCerametekMaterialsCo.,Ltd.isasupplierofAdvancedCeramic,CrystalGlassandSemiconductorMaterials,metals/alloysandinorganiccompoundsasrawmaterialsinsizeofultrafinepowderstopieces,andtablets,targets,monocrystalandwaferthroughmanufacturingordevolpmentorcustomization.Ourfocusedproductsinclude:Semiconductormaterials:II,III,IV,V,VIgroupcompounds(metalSulfides,Selenides,Tellurides,Arsenides,Antimonide...

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  • Silicon

    Updatetime:Mar 19 2013

    FOB Price:1 USD/Kilogram Purity:99% Min. Order:1/Kilogram Supply Ability:10 Month/Metric Ton

    DetailDesc: Name silicon Molecular Formula Si Molecular Weight 28.08 CAS Registry Number 7440-21-3 EINECS 231-130-8 Properties Density 2.33 Melting point 1410 ºC Boiling point 2355 ºC Water solubility INSOLUBLE

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    Jinan Boss Chemical Industry.co,ltd

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  • Silicon

    Updatetime:Jan 29 2013

    DetailDesc: Quick Details CAS No.: 7440-21-3 Melting Point: 1410 °C Boiling Point: 2355 °C Solubility: insoluble in water Appearance: grey lustrous solid or grey powder Risk Codes: 11 Safety: 26-36/37-45-7/9-33-16-36 Transport Information: UN 2922 8/PG 2 Occurrence: Does not occur free in nature but is a major portion of silica and silicates (rocks, quartz, sand, clays, etc.). Assay: 99% Exterior: It...

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  • Silicon

    Updatetime:Oct 14 2012

    DetailDesc: Quick Details CAS No.: 7440-21-3 Melting Point: 1410 °C Boiling Point: 2355 °C Solubility: insoluble in water Appearance: grey lustrous solid or grey powder Risk Codes: 11 Safety: 26-36/37-45-7/9-33-16-36 Transport Information: UN 2922 8/PG 2 Occurrence: Does not occur free in nature but is a major portion of silica and silicates (rocks, quartz, sand, clays, etc.). Specifications we can o...

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  • Silicon

    Updatetime:Oct 11 2012

    DetailDesc: Quick Details CAS No.: 7440-21-3 Melting Point: 1410 °C Boiling Point: 2355 °C Solubility: insoluble in water Appearance: grey lustrous solid or grey powder Risk Codes: 11 Safety: 26-36/37-45-7/9-33-16-36 Transport Information: UN 2922 8/PG 2 Occurrence: Does not occur free in nature but is a major portion of silica and silicates (rocks, quartz, sand, clays, etc.). Min. Order: 20 Metric T...

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  • Silicon

    Updatetime:Sep 29 2012

    DetailDesc: Quick Details CAS No.: 7440-21-3 Melting Point: 1410 °C Boiling Point: 2355 °C Solubility: insoluble in water Appearance: grey lustrous solid or grey powder Risk Codes: 11 Safety: 26-36/37-45-7/9-33-16-36 Transport Information: UN 2922 8/PG 2 Occurrence: Does not occur free in nature but is a major portion of silica and silicates (rocks, quartz, sand, clays, etc.). Specifications silicon ...

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  • Horsetail Extract with Silica acid

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    FOB Price:20 USD/Kilogram Purity:7%

    DetailDesc: Product Details 1 Product Name Horsetail extract 2 Botanical Source Equisetum arvense L. 3 Solvent Used Ethanol & Water 4 Extract ratio UV 5 Activity ingredients silica acid 7% Chemical Physical Control Analysis Item Specification Result Order Characteristic Complies Taste Characteristic Complies Sieve Analysis 100%pass 80 mesh Complies ...

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  • Silicon

    Updatetime:Jun 12 2012

    DetailDesc: Garde Composition Si Content(%) Impurities(%) Fe Al Ca P 1501 99.69 0.15 0.15 0.01 ≤ 0.004% 1502 99.68 0.15 0.15 0.02 ≤ 0.004% 1101 99.79 0.1 0.1 0.01 ≤ 0.004% 2202 99.58 0.2 0.2 0.02 ≤ 0.004% 2502 99.48 0.25 0.25 0.02 ≤ 0.004% 3303 99.37 0.3 0.3 0.03 ≤ 0.005% 411 99.4 0.4 0.1 0.1 ≤ 0.005% 421 99.3 0.4 0.2 0.1 - 441 99.1 0.4 0.4 0.1 - 551 98.9 0.5 0.5 0.1 - 553 98.7 0.5 0.5 0...

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  • Silicon

    Updatetime:Jun 06 2012

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    HangZhou Peak Chemical Co.,Ltd

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  • silicon metal

    Updatetime:May 21 2012

    DetailDesc: silicon metal has 553、441、411、421、3303、3305、2202、2502、1501、1101. si2202%(purity:99.5 Fe:0.2 Al:0.2 Ca:0.02) si3303%(purity:99.3 Fe:0.3 Al:0.3 Ca:0.03) si411% (purity:99.3 Fe:0.4 Al:0.1 Ca:0.1) si421% (purity:99.2 Fe:0.4 Al:0.2 Ca:0.1) si441% (purity:99.0 Fe:0.4 Al:0.4 Ca:0.1) si553% (purity:98.5 Fe:0.5 Al:0.5 Ca:0.3) ?

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    Tianjin Jiayi Hua Import & Export Co., Ltd

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  • Silica powder

    Updatetime:Apr 24 2012

    DetailDesc: silica powder CAS No. 7440-21-3 Molecular Formula: Si Molecular Weight: 28.08 InChI: InChI=1/Si silicon Monocrystalline; SiliconchipsNmm; SiliconrandompiecesNcm; Silicon wafer orientation P-doped; Silicon wafer orientation; Silicon powder; Siliconwaferorientation; Siliconwafer; Silicon (low oxygen); Silicon (3 oxygen levels); Silicon chips (99.9999%); Silicon random pieces (99.5%); Silicon soluti...

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    Tianjin Jinhao chemical Co.,LTD

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References of Silicon cas 7440-21-3

} 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,

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