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Zinc stearate
- Iupac Name：zinc;octadecanoate
- CAS No.: 557-05-1
- Molecular Weight：632.33
- Modify Date.: 2023-02-13 11:40
- Introduction: Zinc stearate is a "zinc soap" that is widely used industrially. In this context, soap is used in its formal sense, a metal "salt" of a fatty acid. It is a white solid that repels water. It is insoluble in polar solvents such as alcohol and ether but soluble in aromatic hydrocarbons (e.g., benzene and chlorinated hydrocarbons) when heated. It is the most powerful mold release agent among all metal soaps. It contains no electrolyte and has a hydrophobic effect. Its main application areas are the plastics and rubber industry where it is used as a releasing agent and lubricant which can be easily incorporated. Zinc carboxylates, e.g. basic zinc acetate, adopt complex formulas, and are not simply dicarboxylates of zinc. Instead the formula for most zinc carboxylates is Zn4O(O2CR)6, consisting of a Zn4O6+ core with carboxylate ligands spanning the edges.
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1. Names and Identifiers
- 1.1 Name
- Zinc stearate
- 1.2 Synonyms
Afco-chem ZNS Dermarone EINECS 209-151-9 Hydense Mathe Metallac MFCD00013031 noname Octadecanoic acid - zinc (2:1) Octadecanoic acid, zinc salt (2:1) stavinorzn-e stearatedezinc stearic acid,zinc Synpro 8 Synpro stearate Talculin Z talculinz Zinc dioctadecanoate Zinc octadecanate Zinc Stearate, Zno Zinc(II) stearate
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- 1.3 CAS No.
- 557-05-1
- 1.4 CID
- 11178
- 1.5 EINECS(EC#)
- 209-151-9; 257-363-5
- 1.6 Molecular Formula
- C36H70O4Zn (isomer)
- 1.7 Inchi
- InChI=1S/2C18H36O2.Zn/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2*2-17H2,1H3,(H,19,20);/q;;+2/p-2
- 1.8 InChIkey
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L
- 1.9 Canonical Smiles
- CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Zn+2]
- 1.10 Isomers Smiles
- CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Zn+2]
2. Properties
- 2.1 Density
- 1.095g/cm3
- 2.1 Melting point
- 128-130?°C(lit.)
- 2.1 Boiling point
- 359.4 °C at 760 mmHg
- 2.1 Flash Point
- 180℃
- 2.1 Precise Quality
- 630.456543
- 2.1 PSA
- 37.30000
- 2.1 logP
- 6.33000
- 2.1 Solubility
- alcohol: insoluble(lit.)
- 2.2 Appearance
- white powder with fatty acid odour
- 2.3 Storage
- Zinc stearate is stable and should be stored in a well-closedcontainer in a cool, dry place.
- 2.4 Autoignition Temperature
- 788 deg F (420 deg C)
- 2.5 Chemical Properties
- white powder with fatty acid odour
- 2.6 Color/Form
- White
- 2.7 Decomposition
- Zinc stearate decomposes on burning producing irritating and toxic fumes including zinc oxide.
- 2.8 Odor
- Faint odor
- 2.9 PH
- Neutral to moistened litmus paper
- 2.10 Water Solubility
- Insoluble
- 2.11 Stability
- Stable. Incompatible with strong oxidizing agents.
- 2.12 StorageTemp
- Keep away from heat and flame. Store in a cool, dry place. Keep containers tightly closed.
3. Use and Manufacturing
- 3.1 Produe Method
- An aqueous solution of zinc sulfate is added to sodium stearatesolution to precipitate zinc stearate. The zinc stearate is then washedwith water and dried. Zinc stearate may also be prepared fromstearic acid and zinc chloride.
- 3.2 Usage
- 1. Zinc stearate can be used as rubber products soften lubricants, textiles lighting agent, PVC stabilizers.2. It can be used as stabilizer in polyvinyl chloride plastics, rubber softener.3. Zinc stearate can be used in the pharmaceutical industry, preparation of solidified oil and lubricants, it can be also used as paint drying agent. Non-toxic products for PVC and rubber processing, the synergy of calcium stearate and barium stearate can effectively improve PVC and rubber for light and heat stability, PVC processing amount is usually <1; it can be used for touch agent of rubber products, it can also be used as polymeric additive of PP, PE, PS, EPS and pencil manufacturing, it is generally used in the amount of 1 to 3 parts.
4. Safety and Handling
- 4.1 Hazard Codes
- Xi
- 4.1 Risk Statements
- 37
- 4.1 Safety Statements
- 22-26-36/37/39-38-24/25
- 4.1 Exposure Standards and Regulations
- Zinc stearate prepared from stearic acid free from chick edema factor is generally recognized as safe when used as a nutrient and/or dietary supplement in accordance with good manufacturing or feeding practice.
- 4.2 Packing Group
- Z01
- 4.2 DisposalMethods
- SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.
- 4.3 RIDADR
- 无资料?
- 4.3 Fire Fighting Procedures
- WATER, FOAM, CARBON DIOXIDE, DRY CHEMICAL.
- 4.4 FirePotential
- COMBUSTIBLE WHEN EXPOSED TO HEAT OR FLAME.
- 4.5 Safety Profile
- Poison by intratrachealroute. Inhalation of zinc stearate has beenreported as causing pulmonary fibrosis. Anuisance dust. Combustible when exposedto heat or flame. To fight fire, use water,foam, CO2, dry chemical. When heated todecomposition it emits toxic fumes of ZnO.See also ZINC COMPOUNDS.
- 4.6 Formulations/Preparations
- ZINC STEARATE USP; 60 G AND 125 G SHAKER CONTAINERS.
GRADES: USP; TECHNICAL; AVAILABLE FREE FROM CHICK EDEMA FACTOR.
HyTech, HyDense, HyQual, RSN 131-HS, Wettable powder; DZS-36, SI-50, IPS, granular; XM powder; XM ultrafine dispersion SP grades; USP
USUALLY OCCURS AS MIXT OF ZINC SALTS OF STEARIC & PALMITIC ACIDS, & USUALLY WITH SOME EXCESS OF ZINC OXIDE. CONTAINS 13.5-15% ZINC OXIDE.
- 4.7 Incompatibilities
- Zinc stearate is decomposed by dilute acids. It is incompatible withstrong oxidizing agents.
- 4.8 WGK Germany
- -
- 4.8 RTECS
- ZH5200000
- 4.8 Reactivities and Incompatibilities
- Oxidizers, dilute acids [Note: Hydrophobic (i.e., repels water)].
- 4.9 Report
-
Zinc and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.
- 4.10 Safety
-
Poison by intratracheal route. Inhalation of zinc stearate has been reported as causing pulmonary fibrosis. A nuisance dust. Combustible when exposed to heat or flame. To fight fire, use water, foam, CO2, dry chemical. When heated to decomposition it emits toxic fumes of ZnO. See also ZINC COMPOUNDS.
Hazard Codes:?
Xi
Risk Statements: 37
R37:Irritating to respiratory system
Safety Statements: 22-26-36/37/39-38
S22:Do not breathe dust.?
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.?
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.?
S38:In case of insufficient ventilation, wear suitable respiratory equipment.
RTECS: ZH5200000
- 4.11 Specification
-
? Zinc stearate , with CAS number of 557-05-1, can be called Dermarone ; Dibasic zinc stearate ; Hidorin D 523 ; octadecanoic acid, zinc salt (2:1) ; Zinc dioctadecanoate . It is a?white powder with fatty acid odour,?Zinc stearate is non-flammable but combustible, be incompatible with oxidizing agents, dilute acids. Emits acrid smoke and fumes of ZnO when heated to decomposition. Zinc stearate (CAS NO.557-05-1) is used as a releasing agent and lubricant in the plastics and rubber industry, can also be used as follows: As a synergic stabilizer for Ba/Cd and Pb stabilizer systems, as a gloss imparting agent in paint industry, as a metal release agent in rubber, polyurethane and polyester processing system, as a die release agent in powder metallurgy, as a chief ingredient in "fanning powder", used by magicians performing card manipulation to decrease the friction between the cards and as a libricant in cosmetics to improve texture.
- 4.12 Toxicity
-
| 1. |
??? |
itr-rat LDLo:250?mg/kg
|
??? |
BJIMAG ?? British Journal of Industrial Medicine. 15 (1958),130. |
5. MSDS
2.Hazard identification
2.1 Classification of the substance or mixture
Hazardous to the aquatic environment, short-term (Acute) - Category Acute 1
2.2 GHS label elements, including precautionary statements
| Pictogram(s) |  |
| Signal word | Warning |
| Hazard statement(s) | H400 Very toxic to aquatic life |
| Precautionary statement(s) | |
| Prevention | P273 Avoid release to the environment. |
| Response | P391 Collect spillage. |
| Storage | none |
| Disposal | P501 Dispose of contents/container to ... |
2.3 Other hazards which do not result in classification
none
7. Synthesis Route
557-05-1Total: 7 Synthesis Route
9. Other Information
- 9.0 Usage
- Zinc stearate is used as a release agent for the manufacturing of rubber, polyurethane and polyester processing. It is a lubricant and thickening agent in cosmetic industry. It plays a vital role as an activator for rubber vulcanization. It acts as a phase transfer catalyst in the saponification of fats due to its lipophilic character. It is an active component in fanning powder, which is utilized to decrease the friction between cards.
10. Computational chemical data
- Molecular Weight: 632.33g/mol
- Molecular Formula: C36H70O4Zn
- Compound Is Canonicalized: True
- XLogP3-AA: null
- Exact Mass: 630.456552
- Monoisotopic Mass: 630.456552
- Complexity: 196
- Rotatable Bond Count: 30
- Hydrogen Bond Donor Count: 0
- Hydrogen Bond Acceptor Count: 4
- Topological Polar Surface Area: 80.3
- Heavy Atom Count: 41
- 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: 3
- CACTVS Substructure Key Fingerprint: AAADcfB8OAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGgAAAAAACACAgAACCAAAAAAIAACQCAAAAAAAAAAAAAEAAAAAABIAAAAAAAAEAAAAAAGIyKCAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==
11. Question & Answer
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Zinc stearate is primarily used as a lubricant and mold release agent for styrene resins, phenolic resins, and amino resins. It also acts as a curing activator and plasticizer in rubber. Main Uses 1...
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Yes, Zinc Stearate can be used as a release agent. It is a white powder that is insoluble in water. It is mainly used as a lubricant and release agent for styrene resins, phenolic resins, and amine re..
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Zinc stearate is a versatile ingredient in paint and wallpaper paste, offering various benefits. It enhances adhesion, making painting and wallpapering more successful. Additionally, it improves the "..
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Chinese Name: Zinc stearate Chinese Synonyms: 十八酸锌; 十八酸锌盐; Zinc stearate (轻质); Zinc stearate 盐; 脂蜡酸锌; Zinc stearate, ZNO 12.5-14% English Name: Zinc stearate English Synonyms: AQUA ZIN..
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