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Zinc stearate CAS#557-05-1
CAS Number: 557-05-1
Chemical Formula: 2(C18H35O2).Zn
Synonyms:
Zinc distearate
Appearance: White power
HS Code: 29157090
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Products Description of Zinc stearate CAS#557-05-1
Zinc stearate is a white, light, fine powder. Molecular formula ZN(C17H35COO)2, molecular structure RCOOZnOOCR (R is the mixed alkyl group in industrial stearic acid), flammable, specific gravity 1.095, autoignition point 900℃, density 1.095, melting point 130℃, greasy feeling. Insoluble in water, ethanol, ether, soluble in hot ethanol, Chemicalbook turpentine, benzene and other organic solvents and acids. Zinc stearate is heated and dissolved in an organic solvent and becomes a colloid when cooled, and decomposes into stearic acid and the corresponding zinc salt when encountering strong acid. It has lubricity, hygroscopicity, non-toxicity, slightly irritating, non-polluting, and non-hazardous characteristics. Zinc stearate and calcium stearate can be separated by using the properties that zinc stearate is soluble in benzene and calcium stearate is insoluble in benzene.
Parameters
| Melting point | 128-130 °C (lit.) |
| Boiling point | 240℃[at 101 325 Pa] |
| density | 1.095g/cm3 |
| vapor pressure | 0Pa at 25℃ |
| Fp | 180℃ |
| storage temp. | Inert atmosphere,Room Temperature |
| solubility | alcohol: insoluble(lit.) |
| form | Powder |
| color | White |
| Odor | wh. powd., faint char. odor |
| Water Solubility | Insoluble |
| Merck | 14,10158 |
| BRN | 3919706 |
| Exposure limits | ACGIH: TWA 10 mg/m3; TWA 3 mg/m3 OSHA: TWA 15 mg/m3; TWA 5 mg/m3 NIOSH: TWA 10 mg/m3; TWA 5 mg/m3 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| LogP | 4.64 at 25℃ |
| CAS DataBase Reference | 557-05-1(CAS DataBase Reference) |
| NIST Chemistry Reference | Zinc(II) n-octadecanoate(557-05-1) |
| EPA Substance Registry System | Zinc stearate (557-05-1) |
Safety Information
| Hazard Codes | Xi |
| Risk Statements | 37 |
| Safety Statements | 22-26-36/37/39-38-24/25 |
| OEB | B |
| OEL | TWA: 10 mg/m3 (total) |
| WGK Germany | - |
| RTECS | ZH5200000 |
| Autoignition Temperature | 1454 °F |
| TSCA | Yes |
| HS Code | 29157090 |
| Hazardous Substances Data | 557-05-1(Hazardous Substances Data) |
| Toxicity | LD50 oral in rat: > 10gm/kg |
Product Application of Zinc stearate CAS#557-05-1
It is used in the pharmaceutical industry, in the preparation of curing oils and lubricants, and is also used as a paint drying agent. It is used in the processing of PVC and non-toxic rubber products. It has a synergistic effect with calcium stearate and barium stearate, and can effectively improve the light and heat stability of PVC and rubber products. The dosage in PVC processing is usually less than 1 part; it is used as a touch agent for rubber products, and is also used in the manufacture of PP, PE, PS, EPS polymerization additives and pencil leads. The general dosage is 1~3 parts.
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Inventory 2-3 working days New production 7-10 working days
