FCCV标准-Succinic Acid琥珀酸.pdf

452/Succinic Acid Monographs
CC V
Succinic Acid
Succinylated Monoglycerides
Bulanedioic Acid
CHP-OR
HOOCCH,, COOH
CH-OR
C4H604
Formula wt 1 18.09
CH2ーOR3
INS: 363
CAS:[110-15
R. R, and R.
be a fatt
acid or succinic acid or hydrogen
DESCRIPTION
Succinic Acid occurs as colorless or white crystals. One gram INS: 472g
dissolves in 13 ml of water at 25 in I ML of boiling water
in 18.5 ML of alcohol, and in 20 ML of glycerin
Function Buffer; neutralizing agent
DESCRIPTION
Succinylated Monoglycerides occur as waxy solids having an
REUIREMENTS
off white color. They are a mixture of succinic acid esters of
mono-and diglycerides produced by the succinylation of a
Identification Place a drop ol a saturated solution of sample product obtained by the glycerolysis of edible fats and oils
into a micro test tube, and add a drop of a 0.5 solution o
by the direct esterification of glycerol with edible fat-
ammonium chloride and several milligrams of zinc powder
forming fatty acids. They melt at about 60. They are soluble
over the mouth of the tube with a disk of filer paper moist- in warm methanol, in ethanol, and in n-propanol
ened with a solution of 5% p-dimethylaminobenzaldehyde
and 20% trichloroacetic acid in hexane. Heat with a small Function Emulsifier; dough conditioner
flame for about I min. A pink to red-violet stain appears on
the paper
REQUIREMENTS
Assay Not less than 99.0% and not more than 100.5% of
CAH6OA
Acid Value Belween 70 and 120
Lead Nol more than 2 mg/kg
Bound Succinic Acid Not less than 14.8%
Melting Range Between 185.0 and 190.0
Free Succinic Acid Not more than 3%o
Residue on lgnition Not more than 0.025%
Hydroxyl Value Between 138 and 152
Lodine Value Not more than 3
Lead Not more than 2 mg/kg
TESTS
Total Succinic Acid Between 14.8% and 25.6%
ssay Dissolve about 250 mg of sample, accurately
weighed, in 25 ml of recently boiled and cooled water, add TESTS
phenolphthalein TS, and titrate with 0. I N sodium hydroxide
to the first appearance of a faint pink color that persists for
Acid Value Determine as directed in Method T under Acid
at least 30 s. Each milliliter of 0.1 N sodium hydroxide is
Value, Appendix VII
equivalent to 5.905 mg of Calso
Free and Bound Succinic Acid
Lead Determine as directed in the Flame Atomic Absorption
0.02 N Sodium Hydroxide in Methano Dissolve 4.0 of
Spectrophotometric Method under ead Limit nest, Appendix
sodium hydroxide in 1000 ML of anhydrous methanol. Trans
IIIB, using a 5-g sample
fer 200. 0 ML of this solution to a 1000-ML volumetric Mask
Melting Range Determine as directed under Melting Range
dilute to volume with anhydrous methanol and mix. Standard
or Temperalure, Appendix IB
ize the solution against dried succinic acid, using phenolphtha
Residue on Ignition Determine as directed under Residue
lein TS as the indicator
on Ignition, Appendix IIC, igniting an 8- sample
Procedure Transfer about 125 mg of sample, accurately
weighed, into a 250)-ML separator containing 100 ML
or Den
Packaging and Storage Store in well-closed containers. Zene, and dissolve the sample by heating the separator with
warm water. Treat the sample an