PALMITIC ACID
|
PRODUCT
IDENTIFICATION
|
CAS
NO. |
57-10-3 |
|
EINECS NO. |
200-312-9 |
FORMULA |
CH3(CH2)14COOH |
MOL
WT. |
256.22 |
H.S.
CODE |
|
SMILES
|
|
TOXICITY
|
Oral rat LD50:
> 10 gm/kg |
SYNONYMS |
n-Hexadecoic acid; Pentadecanecarboxylic acid;
|
n-Hexadecanoic acid;
1-Pentadecanecarboxylic acid; Cetylic acid; Hexadecylic acid; |
CLASSIFICATION
|
|
GENERAL
DESCRIPTION
|
Fatty Acids are aliphatic carboxylic acid with varying hydrocarbon lengths
at one end of the chain joined to terminal carboxyl (-COOH) group at the other
end. The general formula is R-(CH2)n-COOH. Fatty acids are
predominantly unbranched and those with even numbers of carbon atoms between 12
and 22 carbons long react with glycerol to form lipids (fat-soluble components
of living cells) in plants, animals, and microorganisms. Fatty acids all have
common names respectively lilk lauric (C12), MyrIstic (C14), palmitic (C16),
stearic (C18), oleic (C18, unsaturated), and linoleic (C18, polyunsaturated)
acids. The saturated fatty acids have no solid bonds, while oleic acid is an
unsaturated fatty acid has one solid bond (also described as olefinic) and
polyunsaturated fatty acids like linolenic acid contain two or more solid
bonds. Lauric acid (also called Dodecanoic acid) is the main acid in coconut oil
(45 - 50 percent) and palm kernel oil (45 - 55 percent). Nutmeg butter is rich in
myristic acid (also called Tetradecanoic acid ) which constitutes 60-75 percent
of the fatty-acid content. Palmitic acid(also called Hexadecylic acid )
constitutes between 20 and 30 percent of most animal fats and is also an
important constituent of most vegetable fats (35 - 45 percent of palm oil).
Stearic acid ( also called Octadecanoic Acid) is nature's most common
long-chain fatty acids, derived from animal and vegetable fats. It is widely
used as a lubricant and as an additive in industrial preparations. It is used in
the manufacture of metallic stearates, pharmaceuticals, soaps, cosmetics, and
food packaging. It is also used as a softener, accelerator activator and
dispersing agent in rubbers. Oleic acid (systematic chemical name is cis-octadec-9-enoic acid) is the
most abundant of the unsaturated fatty acids in nature. |
PHYSICAL AND CHEMICAL PROPERTIES
|
PHYSICAL
STATE |
white
solid |
MELTING POINT |
59
- 63 C |
BOILING
POINT |
350
-351 C
|
SPECIFIC GRAVITY |
0.849
- 0.851 |
SOLUBILITY
IN WATER |
insoluble |
pH |
|
VAPOR DENSITY |
|
AUTOIGNITION
|
|
NFPA
RATINGS
|
Health: 2
; Flammability: 1; Reactivity: 0 |
REFRACTIVE
INDEX
|
|
FLASH
POINT |
> 110 C |
STABILITY |
Stable under ordinary conditions |
APPLICATIONS
|
Rubber &
Latex, Plastics, Greases &
Lubricants, Food
Additives, Pharmaceuticals, Cosmetics &
Toiletries. |
SALES
SPECIFICATION |
APPEARANCE
|
clear solid |
C16
CONTENT |
98.0%
min |
COLOR,
APHA
|
40
max
|
ACID VALUE
|
217 - 220
|
IODINE
VALUE
|
1.5 max
|
SAP
VALUE
|
208 - 222
|
TITER
|
59 - 63
|
COLOR
|
2Y
0.2R (5.25" Lovibond Cell)
|
TRANSPORTATION |
PACKING |
|
HAZARD CLASS |
Not
regulated |
UN
NO. |
|
OTHER
INFORMATION |
Hazard
Symbols: XI, Risk Phrases: 36/37/38,
Safety Phrases: 28A-37-45 |
SATURATED FATTY ACIDS |
COMMON NAME |
SYSTEMATIC NAME |
CAS RN |
Length |
MELTING
POINT
|
Lauric
Acid |
n-Dodecanoic Acid |
143-07-7 |
Straight
12:0 |
44
C
|
Myristic Acid |
n-Tetradecanoic Acid |
544-63-8 |
Straight
14:0 |
54
C
|
Pentadecanoic Acid |
n-Pentadecanoic Acid |
1002-84-2 |
Straight 15:0 |
52
C
|
Palmitic
Acid |
n-Hexadecanoic Acid |
57-10-3 |
Straight
16:0 |
62
C
|
Stearic
Acid |
n-Octadecanoic
Acid |
57-11-4 |
Straight
18:0 |
70
C
|
Arachidic Acid |
n-Icosanoic Acid |
506-30-9 |
Straight 20:0 |
75
C
|
Behenic Acid |
n-Docosanoic Acid
|
112-85-6 |
Straight 22:0 |
81
C
|
Lignoceric Acid |
n-Tetracosanoic Acid |
557-59-5 |
Straight 24:0 |
85
C
|
|
|