SUCCINIC ANHYDRIDE

PRODUCT IDENTIFICATION

CAS NO. 108-30-5

SUCCINIC ANHYDRIDE

EINECS NO. 203-570-0
FORMULA C4H4O3
MOL WT. 100.07
H.S. CODE

 

TOXICITY Oral rat LD50: 1510 mg/kg
SYNONYMS Dihydro-2,5-furandione; Succinyl Peroxide;
Succinyloxide; dihydro-2,5-diketotetrahydrofuran; succinic acid anhydride; tetrahydro-2,5-dioxofuran; 2,5-dioxotetrahydrofuran; SAA; Butanedioic anhydride; Bernsteinsäureanhydrid (German); Anhídrido succinico (Spanish); Anhydride succinique (French);
DERIVATION Maleic Anhydride

CLASSIFICATION

CARBOXYLIC ACID ANHYDRIDES /

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

White flakes

MELTING POINT

119 - 120 C

BOILING POINT 261C
SPECIFIC GRAVITY

1.504

SOLUBILITY IN WATER 20 g/l (Decomposes)
pH  
VISCOSITY 3 cps at 125 C
VAPOR DENSITY

3.7

AUTOIGNITION

 

NFPA RATINGS

Health: 1; Flammability: 1; Reactivity: 0

REFRACTIVE INDEX

 

FLASH POINT 147 C
STABILITY Stable under ordinary conditions

APPLICATIONS

Succinic Anhydride is mainly used in the manufacture of polymeric materials (alkyd and other special resins). It is used in the manufacture of pharmaceuticals, agrochemicals, dyes, photographic chemicals, surface active agents, lubricant additives, organic flame retardant materials, esters, flavours and fragrances. Its application include as a cross-linking agent in ion-exchange membranes, curing agent for epoxy resins and starch modifier in foods and feeds.

SALES SPECIFICATION

APPEARANCE

White flakes

PURITY

99.5% min

SOLIDIFICATION POINT

118 C min

MOLTEN COLOR

100 max ( Hazen)

MALEIC ANHYDRIDE

0.5% max
TRANSPORTATION
PACKING 25kgs in Bag,
HAZARD CLASS Not regulated
UN NO.  

GENERAL DESCRIPTION OF SUCCINIC ACID

Succinic Acid  (also called Butanedioic Acid) is a dicarboxylic acid with four carbon atoms, occurring naturally plant and animal tissues and that plays a significant role in intermediary metabolism (Krebs cycle). It is a colourless crystalline solid with a melting point of 185-187º C, soluble in water, slightly dissolved in ethanol, ether, acetone and glycerine, but not dissolved in benzene, carbon sulfide, carbon tetrachloride and oil ether. The common method of synthesis of succinic acid is the catalytic hydrogenation of maleic acid or its anhydride. Succinic acid has uses in certain drug compounds, in agricultural and food production, and in perfume esters manufacturing. 

Dicarboxylic acid is a compound containing two carboxylic acid, -COOH, groups. Examples are shown in table. In substitutive nomenclature their names are formed by adding -dioic' as a suffix to the name of the parent compound. They can yield two kinds of salts, as they contain two carboxyl groups in its molecules.

Structure & Length

Common Name

Formula

Melting Point

Straight C2

Oxalic Acid (Ethanedioic Acid)

HOOCCOOH

187 C

Straight C3

Malonic Acid (Propanedioic Acid)

HOOCCH2COOH

136 C

Straight C4

Succinic Acid (Butanedioic Acid)

HOOC(CH2)2COOH

190 C

Straight C5

Glutaric Acid (Pentanedioic Acid)

HOOC(CH2)3COOH

99 C

Straight C6

Adipic Acid (Hexanedioic Acid)

HOOC(CH2)4COOH

152 C

Straight C7

Pimelic Acid (Heptanedioic Acid)

HOOC(CH2)5COOH

106 C

Straight C8

Suberic Acid (Octanedioic Acid)

HOOC(CH2)6COOH

143 C

Straight C9

Azelaic Acid (Nonanedioic Acid)

HOOC(CH2)7COOH

106 C

Straight C10

Sebacic Acid (Decanedioic Acid)

HOOC(CH2)8COOH

134 C