Apple acid

Malic acid, also known as 2-hydroxysuccinic acid, has two stereoisomers due to the asymmetric carbon atom in the molecule. In nature, it exists in three forms, namely D-malic acid, L-malic acid and their mixture DL-malic acid. A white crystal or crystalline powder, highly hygroscopic and easily soluble in water and ethanol. They have a special pleasant sour taste. Malic acid is mainly used in the food and pharmaceutical industries.

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Description

Product Description

Malic acid, also known as 2-hydroxysuccinic acid, has two stereoisomers due to the asymmetric carbon atom in the molecule. In nature, it exists in three forms, namely D-malic acid, L-malic acid and their mixture DL-malic acid.
A white crystal or crystalline powder, highly hygroscopic and easily soluble in water and ethanol. It has a special pleasant sour taste; under normal conditions, the small acid is stable, but at high humidity it is hygroscopic.

Product Parameter

Test	Requirement	Result
ANALYSIS (%)	99.0 –100.5	99.2
SPECIFIC ROTATION	–0.1 -- +0.1	0
MELTING RANGE (degree)	127-132	130
INSOLUTE WATER (%)	MAX 0,1	0.01
SULPHATE ASH (%)	MAX 0,1	0.06
FUMARIC ACID (%)	MAX 1.0	0.56
MALEIC ACID (%)	MAX 0.05	0.01
HEAVY METALS PPM	No more than 10	GGlt; 10
ARSENIC PPM	MAX 2	GGlt; 2
LEAD PPM	MAX 2	GGlt; 2
MERCURY Parts/million	MAX 1	GGlt; 1
IDENTIFICATION TEST	IR ABSORPTION	COMFORTABLE
Conclusion	The product meets the above standard.