Iron ammonium citrate;
2-Hydroxy-1,2,3-Propanetricarboxylic Acid, Ammonium Iron (3+) Salt; Prothoate+; Iron (II)
ammonium citrate;
SMILES
CLASSIFICATION
PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL
STATE
Green or reddish-brown powder
with slight ammonia odor
MELTING POINT
Decomposes
BOILING
POINT
SPECIFIC GRAVITY
1.8
at 20 C
SOLUBILITY
IN WATER
very soluble
pH
VAPOR DENSITY
NFPA
RATINGS
Health: 0 Flammability: 1 Reactivity: 0
FLASH
POINT
STABILITY
Stable under ordinary conditions.
Hygroscopic,
light sensitive
APPLICATIONS
Food Industry,
water
purification, Printing
SALES
SPECIFICATION
BROWN
GREEN
BIBLIOGRAPHY
FCC
/ USP
FCC
/ USP
APPEARANCE
Reddish brown powder
Green powder
ASSAY
Fe:16.5-18.5% NH3:
ca 9% Hydrated Citric Acid:
about 65%
Fe:14.5
-16.0% NH3: ca 7.5%
Hydrated Citric Acid: about 75%
Pb
10ppm
max
10ppm
max
SULPHATE
0.3%
max
0.3%
max
OXALATE
Pass
Test
Pass
Test
As
3ppm
max
3ppm
max
TRANSPORTATION
PACKING
HAZARD CLASS
Not regulated
UN
NO.
OTHER
INFORMATION
Hygroscopic,
light sensitive
GENERAL
DESCRIPTION OF CITRIC ACID
Citric Acid (2-Hydroxy-1,2,3-propanetricarboxylic acid, in IUPAC naming) is a
colourless crystalline organic compound belong to carboxylic acid family. It
exists in all plants (especially in lemons and limes) and in many animal tissues
and fluids. In biochemistry, it is involved in important metabolism of almost
all living things; the Krebs cycle (also called citric acid cycle or
tricarboxylic acid cycle), a part of the process by which animals convert food
to energy. Citric acid works as a preservative ( or as an antioxidant) and
cleaning agent in nature. It is commercially obtained by fermentation process of
glucose with the aid of the mold Aspergillus niger and can be obtained
synthetically from acetone or glycerol. It can be used as an sour taste enhancer
in foods and soft drinks. The three carboxy groups lose protons in solution;
resulting in the excellent pH control as a buffer in acidic solutions. It is
used as a flavouring, stabilizing agent and acidulant (to control acidity) in
food industry, in metal-cleaning compositions as it chelates metals. Citric acid
is available in forms of anhydrous primarily and in monohydrate, the
crystallized form from water. The hydrated form will be converted to the
anhydrous form above 74 C. Citrate is a salt or ester of citric acid. Citrates
are formed by replacing the acidic one, two, or all three of the carboxylic
hydrogens in citric acid by metals or organic radicals to produce an extensive
series of salts, esters, and mixed (double) salts. Cirrates are used in food,
cosmetics, pharmaceutical and medicine industries as well as in plastic
industry; nutrient or food additives having functions of acidity regulator,
sequestering and stabilizing agent, antioxidants synergist, firming agent;
anticoagulant for stored whole blood and red cells and also for blood specimens
as citrates chelate metal ions and saline cathartics, effervescent medicines;
high boiling solvent, plasticizer and resin for food contact plastics.