Food Grade Stearic Acid/ Stearic Acid Powder CAS 57-11-4
Introduction
CAS number: 57-11-4
MDL number: MFCD00002752
EINECS number: 200-313-4
Stearic acid
, octadecanoic acid, simple structure: CH3(CH2)16COOH, produced by the hydrolysis of oils and fats, is mainly used to produce stearates. Each gram was dissolved in 21 ml of ethanol, 5 ml of benzene, 2 ml of chlorofo or 6 ml of carbon tetrachloride.
Function
Stearic acid
stearic
and palmitic acids, although purifiedstearic acid is available.
Fats and oils rich in stearic acid are more abundant in animal fat (up to 30%) than in vegetable fat (typically <5%). The important exceptions are cocoa butter and shea butter, where the
stearic acid
content (as a triglyceride) is 28-45%.[10]
In terms of its biosynthesis, stearic acid is produced from carbohydrates via the fatty acid synthesis machinery wherein acetyl-CoA contributes two-carbon building blocks.
Application
In general, the applications of stearic acid exploit its bifunctional character, with a polar head group that can be attached to metal cations and a nonpolar chain that confers solubility in organic solvents. The combination leads to uses as a surfactant and softening agent. Stearic acid undergoes the typical reactions of saturated carboxylic acids, a notable one being reduction to stearyl alcohol, and esterification with a range of alcohols. This is used in a large range of manufactures, from simple to complex electronic devices.
1.Food industry:As raw material of lubricant, defoamer, food additives.
2.Cosmetics:Used to prepare cream, cold cream, foundation cream, shaving cream,etc.
3.Plastic processing: As plasticizer, lubricant, antistatic agent, antifogging agent,anti-aging agent and foaming agent used in PVC, PP, PE, etc..
4.Textile: As lubricant used in yarn, softening agent in mercerizing paste and waterproofing agent in textile.
5.Other area:Used to prepare polishing paste, metal flotation agent, paint smoothing agent, stencil polishing agent,etc.
Specification
ITEMS |
INDEX |
|||
Grade |
SA1842 |
SA1838 |
SA1820 |
SA1860
|
Appearance |
White fine bead |
White fine bead |
White fine bead |
White fine bead |
Iodine value(gI2/100g)≤ |
0.25 |
0.22 |
0.15 |
1.7 |
Sapon value (mgKOH/g) |
209-211 |
211-212.5 |
214-216 |
193-220 |
Acid value (mgKOH/g) |
208-210 |
210-211.5 |
213-215 |
192-218 |
Color(hazen)≤ |
55 |
65 |
50 |
250 |
Titer,ºC |
55.5 |
55.5 |
56 |
55.7 |
Moisture %≤ |
0.08 |
0.08 |
0.08 |
0.05 |
Inorganic %≤ |
0.001 |
0.001 |
0.001 |
0.001 |
C18, % |
43 |
37 |
17.743 |
57.7 |
C16,% |
56 |
61 |
79.1575 |
38.42 |
C14,% |
0.5 |
1.4 |
2.4257 |
0.82 |
C12,% |
0 |
0.1 |
0.2295 |
0.93 |
C20,% |
0.5 |
0.5 |
0.0431 |
1.55 |