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| Magnesium stearate |
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| Petrifaction Rubber and Plastic additive |
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The product is synthesized by the advanced production process called dry method (topspeed
dispersing neutralization method), which has the high purity, low free fatty acid and
the good lubricating properties, etc. It is widely used in the fields of the plastic, moldreleasing
agent for tablets (need meeting the medicine criterion), emulsifying agents of
cosmetics. It also can conjugate with Ca Soap as stabilizer of PVC. |
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| Technique specifications |
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Name: Magnesium stearate
Molecular formula: Mg(C17H35COO)2
Molecular weight: 591 |
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| Physical and Chemical Properties: |
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White fine powder, nontoxic, inodorous, tasteless, combustible, density 1.028g/cm3, melting points:
88.5°C(pure sample), soluble in hot ethanol and slightly solable in water. It will be decomposed to stearic
acid and Mg salts when reacting with strong acids. |
| PRODUCT SPECIFICATIONS |
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| Items |
Indicator |
Type |
Type 1 |
Type 2 |
Mg (%) |
4.0±0.3 |
4.0±0.8 |
Free fatty acid (%) |
≤1.0 |
≤2.0 |
Melting points (°C) |
≥95 |
≥105 |
Volatiles (%) |
≤2.0 |
Fineness (%) by 200 mesh |
≥99 |
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| Properties and use instructions |
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Used as PVC thermal stabilizers, face flour in cosmetic, raw materials of ointment for skin emollient and
medicine tablet; used in bakelite for enhancing lubricity, brightness and transparency; used as transparent
and flatting agents for paints. It has the functions of lubricating, antisticking and flow-adding, so used as
lubricant, gliding glidant, antisticking agents for tablets and capsules agent in pharmaceutical preparation,
the dosage is 0.25~2.0%, also can be used as capsule agents, emulsifier and anticaking agent for food also
used in Rubber processing for Lubrications . |
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| Environment and toxicity |
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Nontoxic, biolytic; in reference to 21 CFR.863-177.2600-184.1229 (USA) or 90/128/EEC (EU)
Date: February 23, 1990 and further revised. |
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| Packing and storage |
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| 1. 20kg/bag, the inner packing is PE plastic bag; the outside wrapping is composite craft paper bag. |
| 2. Should storage and transport under shady, cool and ventilated environment; Avoid acid, alkali and
corrosive substances. Keep it away from the humidity, hotness, fire and corrosion. |
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