Factory High Quality Potassium Fluoroborate KBF4 98%min CAS 14075-53-71

3 year ago

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3 year

Product details

ι-Malic acid is nearly odorless (sometimes a faint, acrid odor) with a tart, acidic taste. It is nonpungent. May be prepared by hydration of maleic acid; by fermentation from sugars.

L-(-)-Malic acid is used as a food additive, Selective α-amino protecting reagent for amino acid derivatives. Versatile synthon for the preparation of chiral compounds including κ-opioid receptor agonists, 1α,25-dihydroxyvitamin D3 analogue, and phoslactomycin B.

Application：

L-malic acid is used as an acidifier for refreshing beverages (such as lactic acid bacteria drinks, milk drinks, soft drinks, colas), frozen foods (such as fruit dew, ice cream, etc.), processed foods (such as fruit wine, mayonnaise), color retention agent for fruit drinks, preservatives, and emulsification stabilizer for egg yolks, etc.

Melting point	101-103 °C (lit.)
alpha	-2 º (c=8.5, H2O)
Boiling point	167.16°C (rough estimate)
density	1.60
FEMA	2655 \| L-MALIC ACID
refractive index	-6.5 ° (C=10, Acetone)
Fp	220 °C
storage temp.	Store below +30°C.
solubility	H₂O: 0.5 M at 20 °C, clear, colorless
form	Powder
color	White
Specific Gravity	1.595 (20/4℃)
PH	2.2 (10g/l, H2O, 20℃)
pka	(1) 3.46, (2) 5.10(at 25℃)
optical activity	[α]20/D 30±2°, c = 5.5% in pyridine

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