USD $10.00-16.00 / Kilogram
USD $1.00-3.00 / Metric Ton
USD $1.00-2.89 / Metric Ton
USD $40.00-60.00 / Metric Ton
USD $70.00-90.00 / Kilogram
USD $1.00-2.50 / Metric Ton
USD $5.00-20.00 / Metric Ton
USD $1.00-3.00 / Metric Ton
USD $1.00-10.00 / Kilogram
features:
salicylic glycosides are white crystals; bitter taste; 199 ~ 202 ℃, melting point than polarimetric [alpha] library 45.6 ° 100 centimeters (0.6 g / 3 anhydrous ethanol); soluble in water, soluble in boiling water, difficult to dissolve in ethanol (1:9 0), insoluble in ether or chloroform, but soluble in alkali solution, pyridine or glacial acetic acid. the aqueous solution has a neutral reaction, and the molecules have no free phenol hydroxyl, belonging to phenolic glycosides. glucose and salicylic acid can be produced by hydrolysis of dilute acid or bitter amygdalase. the molecular formula of salicyol is c7h8o2. a colorless needle crystal; melting point of 86 ~ 87 ℃; heat to 100 ℃ sublimation; soluble in water and benzene, soluble in ethanol, ether and chloroform; sulfuric acid is red.
function:
salicylic glycosides are used in the treatment of rheumatism, and have been replaced by other drugs. because it can produce salicyl alcohol hydrolysis, easy to oxidation and salicylic acid, so was the main source of salicylic acid synthesis drugs, now in the pharmaceutical industry has made salicylic acid synthesis.
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english name: d (-) - salicin
english alias d-salicin (1.05055); alpha - hydroxy - o - tolyl beta - d - glucopyranoside; 2 - (hydroxymethyl) phenyl beta - d - glucopyranoside; white willow bark extract; salicin
einecs. 205-331-6
molecular formula: c13h18o7
molecular weight: 286.28
content: 15% - 98%
physical and chemical properties:
melting point of 197-200 & ordm; c
birotation-61.5 & ordm; (water, c = 5)
water soluble 36 g/l (15 & ordm; c), 250 g/l (60 & ordm; c)
features:
salicylic glycosides are white crystals; bitter taste; 199 ~ 202 ℃, melting point than polarimetric [alpha] library 45.6 ° 100 centimeters (0.6 g / 3 anhydrous ethanol); soluble in water, soluble in boiling water, difficult to dissolve in ethanol (1:9 0), insoluble in ether or chloroform, but soluble in alkali solution, pyridine or glacial acetic acid. the aqueous solution has a neutral reaction, and the molecules have no free phenol hydroxyl, belonging to phenolic glycosides. glucose and salicylic acid can be produced by hydrolysis of dilute acid or bitter amygdalase. the molecular formula of salicyol is c7h8o2. a colorless needle crystal; melting point of 86 ~ 87 ℃; heat to 100 ℃ sublimation; soluble in water and benzene, soluble in ethanol, ether and chloroform; sulfuric acid is red.
function:
salicylic glycosides are used in the treatment of rheumatism, and have been replaced by other drugs. because it can produce salicyl alcohol hydrolysis, easy to oxidation and salicylic acid, so was the main source of salicylic acid synthesis drugs, now in the pharmaceutical industry has made salicylic acid synthesis.