Vitamin B1 Hydrochloride occurs as white, fine crystals or crystalline powder. It is odorless or has a slight, characteristic odor.
Appearance: White or almost white crystalline powder
Clarity and color of solution: Should be clear and colorless
Color of solution: No more than solution Y7 or GY7
PH: 2.7 °C 3.3
Sulfates: 300 ppm max
Nitrates: None
Heavy metals: 20 ppm max
Absorbance of solution: 0.025 max
Chromatographic purity: 1% max
Loss on drying: 5.0% max
Residue on ignition: 0.10% max.