DL-Malic Acid food grade,China SUNTRAN price supplier

Properties : malic acid in normal circumstances stability and high humidity are hygroscopicity. Soluble in methanol, ethanol, acetone and many other polar solvents.

Production Methods : fumarate or maleic acid catalyzed by the high temperature and high pressure water can be obtained DL-malic acid. Will fumarate dissolved in distilled water and preheat to 50 °C by adding high pressure within the reactor. Heated to a 180-199 °C, pressure of 1MPa, the reaction after 8h down to 100 °C, pressure up reaction. At 60 C under vacuum condensation and precipitation crystallization. Then cooling, dehydration, drying derived products. The yield of 88%. Malic acid, a major producer of fermentation method, using variations of carbohydrate yeast fermentation obtained.

Specification:

Items

Specifications

Appearance:

White crystals ,crystalline powder

Assay:

99.0 - 100.5%

Specific Rotation:

-0.10 o --- +0.10 o

Residue on ignition:

0.10% max

Water-insoluble substance:

0.1% max

Fumaric Acid:

1.0% max

Maleic Acid:

0.05% max

Heavy metals(as Pb):

10 ppm max

Arsenic(As) :

4 ppm max

CAS No.: 617-48-1 MF: C4H6O5 EINECS No.: 210-514-9

Place of Origin: China (Mainland) Type: Acidity Regulators Brand Name: SUNTRAN

Appearance: White crystals ,crystalline powder

Items	Specifications
Appearance:	White crystals ,crystalline powder
Assay:	99.0 - 100.5%
Specific Rotation:	-0.10 o --- +0.10 o
Residue on ignition:	0.10% max
Water-insoluble substance:	0.1% max
Fumaric Acid:	1.0% max
Maleic Acid:	0.05% max
Heavy metals(as Pb):	10 ppm max
Arsenic(As) :	4 ppm max

CAS No.: 617-48-1	MF: C4H6O5	EINECS No.: 210-514-9
Place of Origin: China (Mainland)	Type: Acidity Regulators	Brand Name: SUNTRAN
Appearance: White crystals ,crystalline powder