Basic information
- Name:
Zinc stearate
- CAS No.:
557-05-1
- Molecular Structure:
- Formula:
- C36H70O4Zn
- Molecular Weight:
- 632.30
- Synonyms:
- Octadecanoicacid, zinc salt (9CI);Stearic acid, zinc salt (8CI);DLG 20;DLG 20A;Dermarone;Dibasic zinc stearate;Disperso D;E 366;Electol MZ 2;F 115;F 155 (salt);GF 200;Hidorin D 523;Hidorin F 115;Hidorin F930;Hidorin H 943;Hidorin Z 8-30;Hidorin Z 8-36;Hymicron F 115;Hymicron ZJ 557;Hymicron ZK349;KV 85A1;L 111;LG 3;LG 3 (salt);Ligastab ZN 70;MFX 50J3;MR 450;MZ 2;MZN 2;Metallac;NF-SZ;PG 2000;RSN 131HS;SAK-ZS-P;SAK-ZS-PLB;SP 100ZB;SZ 2000;SZ-DF-PF;SZ-PG;SZ-T;SZ-TF;Shinryu FZ;Stavinor CecavonZN;Synpro ABG;Talculin Z;Z 2000;Z 2000 (salt);Z 7-30;ZNS-P;ZS 101;Zinc Stearate L;Zinc distearate;Zinc octadecanoate;
- EINECS:
- 209-151-9
- Density:
- 1.095 g/cm3
- Melting Point:
- 128-130 °C(lit.)
- Boiling Point:
- 359.4 °C at 760 mmHg
- Flash Point:
- 162.4 °C
- Solubility:
- insoluble in water
- Appearance:
- white powder with fatty acid odour
- Hazard Symbols:
Xi- Risk Codes:
- 37
- Safety Description:
- 22-26-36/37/39-38 Details
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Chemistry
Molecular Structure of Zinc stearate (CAS NO.557-05-1):
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IUPAC Name: zinc octadecanoate
Empirical Formula: C36H70O4Zn
Molecular Weight: 632.3476
H bond acceptors: 2
H bond donors: 1
Freely Rotating Bonds: 16
Polar Surface Area: 37.3Å2
Index of Refraction:
Molar Refractivity: cm3
Molar Volume: cm3
Surface Tension: dyne/cm
Flash Point: 162.4 °C
Enthalpy of Vaporization: 63.84 kJ/mol
Boiling Point: 359.4 °C at 760 mmHg
Vapour Pressure: 8.58E-06 mmHg at 25°C
Melting point: 128-130 °C(lit.)
Water Solubility: Insoluble
Merck: 14,10158
Stability: Stable. Incompatible with strong oxidizing agents.
Toxicity Data With Reference
| 1. | itr-rat LDLo:250 mg/kg | BJIMAG British Journal of Industrial Medicine. 15 (1958),130. |
Consensus Reports
Zinc and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.
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.
Hazard Codes: 
Xi
Risk Statements: 37
R37:Irritating to respiratory system
Safety Statements: 22-26-36/37/39-38
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.
RTECS: ZH5200000
Standards and Recommendations
OSHA PEL: TWA Total Dust: 10 mg/m3; Respirable Fraction: 5 mg/m3
ACGIH TLV: TWA 10 mg/m3 of total dust when toxic impurities are not present, e.g., quartz <1%
Specification
Zinc stearate , with CAS number of 557-05-1, can be called Dermarone ; Dibasic zinc stearate ; Hidorin D 523 ; octadecanoic acid, zinc salt (2:1) ; Zinc dioctadecanoate . It is a white powder with fatty acid odour, Zinc stearate is non-flammable but combustible, be incompatible with oxidizing agents, dilute acids. Emits acrid smoke and fumes of ZnO when heated to decomposition. Zinc stearate (CAS NO.557-05-1) is used as a releasing agent and lubricant in the plastics and rubber industry, can also be used as follows: As a synergic stabilizer for Ba/Cd and Pb stabilizer systems, as a gloss imparting agent in paint industry, as a metal release agent in rubber, polyurethane and polyester processing system, as a die release agent in powder metallurgy, as a chief ingredient in "fanning powder", used by magicians performing card manipulation to decrease the friction between the cards and as a libricant in cosmetics to improve texture.