Zinc stearate CAS：557-05-1
Superior Lubricating Performance：Zinc stearate offers excellent lubrication properties, effectively improving processing efficiency in a variety of material production systems.
Stable & Eco-Friendly Properties：This compound features stable chemical properties under normal conditions, with low toxicity, mild irritation, and little impact on the surrounding environment.
Unique Solubility Features：Although insoluble in water, zinc stearate can dissolve in organic solvents such as benzene and turpentine, adapting to different application processes.
Excellent Thermal Stability：Boasting a melting range of 128–130°C, it maintains stable structural performance under moderate heating conditions, making it widely used in industrial manufacturing and processing.
Zinc stearate appears as a fine white amorphous powder with the molecular formula Zn(C₁₇H₃₅COO)₂, and its structural form can be expressed as RCOO–Zn–OOCR, in which R stands for the alkyl group derived from industrial stearic acid. As a flammable substance, it has a specific gravity of 1.095, bulk density around 1.095 g/cm³, autoignition temperature of 900°C, and melting point at 130°C, with a smooth and slippery surface texture.
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 | 1,410,158 |
| 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 |
