Chemical name: thiamine hydrochloride, thiamine hydrochloride
Molecular formula: C12H17ClN4OS • HCl
CAS: 67-03-8
Properties: white to yellow fine crystals. Pure odorless, usually with the smell of rice bran as a result of the decomposition products of sulfur. a bitter taste. Anhydrous materials exposed to the air quickly absorb 4% of the water. heat-stable (170℃). Stable in the air in dry state, and can be stored for long periods. it slowly decomposes and is colored as absorbing moisture. pH value is 3.13 in 1% aqueous solution. It is more stable when pH value is 2–4 in aqueous solution. Not stable to heat when pH value is 5.5 above. break down when exposed to Ultraviolet rays. Melt and partially decompose at about 248℃. Easily soluble in water (1:1). Soluble in ethanol, glycerol, propylene glycol. Insoluble in ether and benzene.
Usage: nutritional supplements
Applications: used in condiments, meat sausages, bakery, cereal products, milk and dairy products. And also used in wheat flour, bread, noodles, soy sauce, margarine, cakes, soft drinks, jam and other foods.
Quality Standard: CP2005
|
item |
standard |
|
appearance |
white crystal or crystalline powder |
|
absorption coefficient |
406–436 |
|
identification |
positive reaction |
|
acidity (2.5%,pH) |
2.8–3.3 |
|
solution color |
1% colorimetric with the potassium dichromate solution max |
|
clarity of solution |
clarify |
|
sulfate (%) |
0.01 max |
|
nitrate (%) |
0.25 max |
|
loss on drying (%) |
5.0 max |
|
residue on ignition (%) |
0.1 max |
|
Iron salt (ppm) |
20 max |
|
heavy metal (ppm) |
10 max |
|
total chlorine (%) |
20.6–21.1 |
|
content (%) |
99.0–101.0 |
Packaging: 25KG / barrel
Transportation: avoid sun and rain, be transported as general chemicals but with no toxic, hazard materials.
Storage: stored in dry clean dark environment, and not be mixed with toxic substances to avoid contamination.
Shelf life: two years |
