Zinc stearate , Zn10-12% , 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 |
| 250G | RMB24.80 | In Stock |
|
| 500G | RMB48.80 | In Stock |
|
| 2.5KG | RMB185.60 | In Stock |
|
| others | Enquire |
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 |
