PALMITIC ACID

PRODUCT IDENTIFICATION

CAS NO. 57-10-3

PALMITIC ACID

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