SPECIFICATION:
Items
Medical grade
Electronic / Industrial grade
Appearance
White to slightly yellow crystalline powder
White flake
Chlorides
0.005% max
--
Sulfates
0.025% max
Heavy metals
0.001% max
Fe
0.002% max
3ppm max
APHA color, Hazen
<200
Acid value mgKOH/g
587-594
Water
0.5% max
Melting point
103-109 ℃
Transmittance(440nm/550nm)
90/99
Monobasic acid
0.05% max
Assay
99.0%min
90.0%min