Malic acid is a dicarboxylic acid with the formula
HO2CCH2CHOHCO2H,
found in apples, pears, grapes and many other fruits.
It confers a tart taste to wine, It is the
active ingredient in many sour or the source of tartness.
Malate, salt or ester of malic acid, is an intermediate in the tricarboxylic
acid (Krebs)
cycle, formed from fumarate by the addition of an -OH group and itself oxidized to form oxaloacetate using NAD+ as a cofactor.
Malate is a source of CO2 in the Calvin cycle.
The action is similar
to that of tartaric acid. In addition to the application as a food additive
its application field include; Acidulant, Preservative, Food and Feed Additive, Metal cleaning and plating,
Retardant in plasters and cements, Cosmetics, Pharma products and Textile industry.
SALES
SPECIFICATION
BIBLIOGRAPHY
FCC
IV
APPEARANCE
White
Crystal or powder
PURITY
99.0%
min
MELTING
POINT
130
- 132 C
MOISTURE
0.3%
max
FUMARIC ACID
1.0%
max
MALEIC ACID
0.05% max
WATER
INSOLUBLES
0.05%
max
ASH
0.02%
max
IRON
10ppm
max
ARSENIC
1ppm
max
LEAD
1ppm
max
HEAVY
METALS
10ppm
max
SUM
COLIFORM BACTERIA
10
ufc/g
STREPTOCOCCUS
10
ufc/g
MOULDS
AND YEAST
10
ufc/g
SALMONELLA
Absent
SIEVE
ANALYSYS
Powder
: 90% min ( 60 mesh )
Granular
: 100% (10 mesh), 10% max (50 mesh)
TRANSPORTATION
PACKING
25kgs,
500kgs, 1,000kgs in Bag
HAZARD CLASS
UN
NO.
OTHER
INFORMATION
FEMA No. 2655;
REMARKS
EXAMPLES
OF NATURALLY OCCURRING CARBOXYLIC ACIDS (excluding
fatty acids)