In rubber industry: It used as vulcanization activator of rubber ploymer and latex, also softener.
In plastics industry: Pla
CAS No: 57-11-4
Molecular Weight: 284.48
Chemical Formula: CH3(CH2)16COOH
Appearance: White or yellowish-white powder.
Index: SA 800Type SA 400Type SA 200type
Acid number, mg/g: 198-218 203-218 205-210
Saponification number, mg/g: 200-220 205-220 206-211
Iodinevalue, g/100g: 8max 4max 2max
Freezing point, C: 52min 54min 54-57
Moisture%: 0.3max 0.3max 0.3max
Stearic acid is useful as an ingredient in making candles, plastics, dietary supplements, oil pastels and cosmetics, and for softening rubber. It is used to harden soaps, particularly those made with vegetable oil. It is also used as a parting compound when making plaster castings from a plaster piece mold or waste mold and when making the mold from a shellacked clay original. Esters of stearic acid with ethylene glycol, glycol stearate and glycol distearate, are used to produce a pearly effect in shampoos, soaps, and other cosmetic products. They are added to the product in molten form and allowed to crystalize under controlled conditions. In fireworks, stearic acid is often used to coat metal powders such as aluminium and iron. It is used along with simple sugar or corn syrup as a hardener in candies. It is used with zinc as zinc stereate as fanning powder for cards to deliver smooth fanning motion. Stearic acid is one of most commonly used lubricants during injection molding and pressing of ceramic powders.
Packaging: Packed in Woven bag lined with plastic film. 25kgs in each bag.
Storage: Keep dry! Keep from heat and moisture!
|Iodine g/100g < =||2.0||4.0||8.0|
|Soap Value mg/g||206-211||203-214||193-220|
|Acid Value mg/g||205-210||202-212||192-218|
|Color (Hazen) < =||200||400||800|
|Freezing Point||54-57||> =54||> =52|
|Water content % < =||0.20||0.20||0.20|
|Inorganic acid %< =||0.001||0.001||0.001|