Home Categories Organic Chemistry Zinc stearate
A8453112

Zinc stearate , ZN10-12%, 325 mesh , 557-05-1

Synonym(s):
Stearic acid zinc salt

CAS NO.:557-05-1

Empirical Formula: C36H70O4Zn

Molecular Weight: 632.33

MDL number: MFCD00013031

EINECS: 209-151-9

Pack Size Price Stock Quantity
500G RMB48.80 In Stock
2.5KG RMB216.00 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 128-130 °C (lit.)
Boiling point: 240℃[at 101 325 Pa]
Density  1.095g/cm3
vapor pressure  0Pa at 25℃
Flash point: 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)

Description and Uses

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.

In tablet manufacture; in cosmetic and pharmaceutical powders and ointments; as a flatting and sanding agent in lacquers; as a drying lubricant and dusting agent for rubber; as a plastic mold releasing agent; as a waterproofing agent for concrete, rock wool, paper, textiles.

Safety

Symbol(GHS) 
GHS07,GHS09
Signal word  Warning
Hazard statements  H413-H335-H400
Precautionary statements  P273-P391-P501
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

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