STEARIC ACID

STEARIC ACID

PRODUCT IDENTIFICATION

CAS NO.

57-11-4

STEARIC ACID

EINECS NO.

200-313-4

FORMULA

CH₃(CH₂)₁₆COOH

MOL WT.

284.48

H.S. CODE

3823.11

DERIVATION

TOXICITY

SYNONYMS

n-octadecanoate; 1-heptadecanecarboxylic acid;

n-octadecylic acid; cetylacetic acid; Acide octadecylique; Acide stearique; stearophanic acid;

CLASSIFICATION

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

White to yellowish solid

MELTING POINT

67 - 69 C

BOILING POINT

361

SPECIFIC GRAVITY

0.94

SOLUBILITY IN WATER

0.1-1 g/100 ml at 23 C

VAPOR DENSITY

9.8

AUTOIGNITION

NFPA RATINGS

Health: 1 Flammability: 1 Reactivity: 0

REFRACTIVE INDEX

FLASH POINT

196 C

STABILITY

Stable under ordinary conditions

GENERAL DESCRIPTION & APPLICATIONS

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 lauric (C12), myrIstic (C14), palmitic (C16), stearic (C18), oleic (C18, unsaturated), and linoleic (C18, polyunsaturated) acids. The saturated fatty acids have no double bonds, while oleic acid is an unsaturated fatty acid has one double bond (also described as olefinic) and polyunsaturated fatty acids like linolenic acid contain two or more double 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. Stearic Acid 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.

INDIVIDUAL SATURATED FATTY ACIDS

COMMON NAME	SYSTEMATIC NAME	CAS RN	Length	MELTING POINT
Undecylic Acid	n-Hendecanoic Acid	112-37-8	Straight 11:0	30 C
Lauric Acid	n-Dodecanoic Acid	143-07-7	Straight 12:0	44 C
Tridecylic Acid	n-Tridecanoic Acid	638-53-9	Straight 13:0	42 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
Margaric Acid	n-Heptadecanoic Acid	506-12-7	Straight 17:0	61 C
Stearic Acid	n-Octadecanoic Acid	57-11-4	Straight 18:0	70 C
Nondecylic Acid	n-Nonadecanoic Acid	646-30-0	Straight 19:0	70 C
Arachidic Acid	n-Eicosanoic Acid	506-30-9	Straight 20:0	75 C
Henicosanoic acid	n-Heneicosanoic Acid	2363-71-5	Straight 21:0	74 C
Behenic Acid	n-Docosanoic Acid	112-85-6	Straight 22:0	81 C
Tricosanoic acid	n-Tricosanoic acid	2433-96-7	Straight 23:0	80 C
Lignoceric Acid	n-Tetracosanoic Acid	557-59-5	Straight 24:0	85 C
Pentacosanoic Acid	n-Pentacosanoic Acid	506-38-7	Straight 25:0	85 C
Cerotinic acid	n-Hexacosanoic acid	506-46-7	Straight 26:0	87 C
Heptacosanoic Acid	n-Heptacosanoic Acid	7138-40-1	Straight 27:0	87 C
Montanic acid	n-Octacosanoic acid	506-48-9	Straight 28:0	91 C
Nonacosanoic Acid	n-Nonacosanoic Acid	4250-38-8	Straight 29:0	91 C
Melissic acid	n-Triacontanoic acid	506-50-3	Straight 30:0	93 C
	n-Hentriacontanoic Acid	38232-01-8	Straight 31:0
Lacceroic Acid	n-Dotriacontanoic Acid		Straight 32:0
Ceromelissic Acid	n-Tritriacontanoic acid		Straight 33:0
Geddic Acid	n-Tetratriacontanoic acid		Straight 34:0
Ceroplastic Acid	n-Pentatriacontanoic acid		Straight 35:0

SALES SPECIFICATION

PALM OIL ACID (HARDENED)

APPEARANCE

Bead

IODINE VALUE

0.5 max

ACID VALUE

208 - 210

SAP VALUE

209 - 211

TITER

54 - 56 C

COLOR

0.5 R / 2.5 Y

CARBON DISTRIBUTION

C14 (1% max) + C16 (62% max) + C18 (45% max)

TRANSPORTATION

PACKING

25kgs in bag , 17mts in Container

HAZARD CLASS

Not regulated

UN NO.

GENERAL DESCRIPTION OF FAT

Commercial fats produced by organic processes in plants are palm, coconut, palm kernel, sunflower, soybean, and other oils. Their main components are triolein and triglyceryl esters of stearic (C18), palmitic (C16), myristic(C14), lauric (C12), oleic (C18:1), and other fatty acids. Tallow is a refined hard fat extracted from fatty deposits of animals, especially from suet (fatty tissues around the kidneys of cattle and sheep). The molecules of most natural fatty acids have an even number of carbon chains due to the linkage together by ester units. Analogous compounds of odd numbers carbon chain fatty acids can be made synthetically. All fats are insoluble in water and have lighter weight than water. Industrial fats can be sub-classified as fat, grease or oil depending on melting point. Fats that are liquid at room temperature are referred to oil. Grease has a higher initial viscosity than oil. It is used as a lubricant. The organic processes to convert fats to fatty acids (or esters) and glycerol is called oleochemistry. Fatty acids and glycerol are produced by hydrolysis (addition reaction of water molecule with cleavage of parent molecules) of the triglycerides. Fatty esters are produced by esterification reaction. Coconut or palm oils are better source to get saturated fatty acids than sunflower, soybean or rapeseed oils which have more unsaturated fatty acids composition of triglycerides. Tall oil fatty acid (TOFA) is a low cost unsaturated fatty acid (oleic acid) and is a source of low boiling point fatty acids. It is an alternative to tallow fatty acid in soap applications. Generally, commercial coconut fatty acid has carbon chain composition of; C10 (5% max) + C12 (45 - 55%) + C14 (20 - 25%) + C16 (10 - 15 %) + C18 (10 - 15% max, including unsaturated fatty acids). Fats are used to make soap, food products, cosmetics, and candles, and lubricants. They are wisely used in producing synthetic surfactants.