Molecular formula: C12H17N5O4S
molecular weight: 327.36
melting point: 196 ~ 200 (decomposition) ° C
toxicity LD50 (mg / kg): mice by intraperitoneal injection 387.3
characters: the white to light yellow crystalline powder , odorless, slightly peculiar odors.
solution: not soluble in chloroform and ether. The solubility in water: 25 ° C 2.7,100 31.0 ° C
purposes: for nutritional supplements, as the water-soluble than hydrochloride small, and on a more stable base, strengthen it for food than hydrochloride stability. For meters, flour, cakes, soy sauce and so on; Also for medicine.
preparation or sources: (a) to use alkali treatment thiamine hydrochloride, off chloride, nitrate and the reaction to the result; (2) 2 - methyl-furan and butenenitrile feedback, made of nitrate; (3) β - ethoxy-B formic acid and propionic acid propyl Synthesis and then into nitrate; (4) phosphorothioate thiamine in the acidic sulfate, and hydrogen peroxide, generated thiamine sulfate, barium nitrate filter to remove the barium sulfate production, concentrated filtrate, and the use of sodium bicarbonate derived.
Note: not deliquescence. 0.2% aqueous solution at pH 6.5 to 7.1, pH = 4:00 solution of a neutral solution stability, the use of this feature, at room temperature for 18.5g/100ml concentration of the solution.
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