Magnesium stearate

We are offering magnesium stearate ip/bp/usp.
Chemical formula: c36h70mgo4
molecular weight: 591.244
cas no : 557-04-0
storage: store in cool and dry place.
applications uses:
used as an excipient by pharmaceutical industry. Used in manufacture of tablet as lubricating agent and disintegrating agent.
Emulsifying agents of cosmetics.
Widely used in the fields of the plastic, it also can conjugate with ca soap as stabilizer of pvc.
Product specification of i.p grade
s.no. analysis parameters specification results
1 description very fine white powder, free form grittiness complies
2 solubility passes as per i.p. complies
3 identification: a: passes as per i.p. complies
b: passes as per i.p. complies
c: passes as per i.p. complies
d: passes as per i.p. complies
4 appearance of solution passes as per i.p. complies
5 appearance of solution of the fatty acid passes as per i.p. complies
6 acidity or alkalinity nmt 0.05 ml of 0.1 m hci or 0.1 m naoh is required to change the colour complies
7 acid value of the fatty acid limit :195 to 210 203.75
8 free stearic acid limit max:3.0% ww 1.96% ww
9 zinc stearic limit: no violet ppt is formed complies
10 heavy metals limit max: 20 ppm complies
11 chlorides limit max:250 ppm complies
12 sulphates limit max:0.6% complies
13 loss on drying limit max:6.0% ww 3.02 % ww
14 assay as magnesium limit max:3.8% ww to 5.0% ww 4.75 % ww
15 fatty acid composition limit min-40 % c18-68.1028 % ( stearic acid) complies
limit min-90 % total-97.6396 % ( stearic acid+ palmitic acid ) complies