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Name Zinc stearate
CAS 557-05-1
EINECS(EC#) 209-151-9
Molecular Formula C36H70O4Zn
MDL Number MFCD00013031
Molecular Weight 632.33
MOL File 557-05-1.mol

Chemical Properties

Appearance white powder with fatty acid odour
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
Stability: Stable. Incompatible with strong oxidizing agents.
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
LogP 4.64 at 25℃
zinc stearate is used in cosmetic formulations to increase adhesive properties. It is also used as a coloring agent. This is a mixture of the zinc salts of stearic and palmitic acids.
CAS DataBase Reference 557-05-1(CAS DataBase Reference)
NIST Chemistry Reference Zinc(II) n-octadecanoate(557-05-1)
EPA Substance Registry System 557-05-1(EPA Substance)

Safety Data

Hazard Codes  Xi
Risk Statements 
R37:Irritating to the respiratory system.
Safety Statements 
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 .
WGK Germany  -
RTECS  ZH5200000
Autoignition Temperature 1454 °F
HS Code  29157020
Safety Profile
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.
Hazardous Substances Data 557-05-1(Hazardous Substances Data)
LD50 oral in rat: > 10gm/kg

Hazard Information

Material Safety Data Sheet(MSDS)

Questions And Answer

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