Ascorbic acid: usp grade , food grade , DC grade
In net 25kg carton
Molecular formula:(c6h5)2nh molecular weight:169.23
Structive formula:
Product quality standard:
Itemtechnical index 1stgrade
Appearancewhite or light brown tabletlight brown tablet
Diphenylamine99.5099.00
Freezing pointª52.552.3
Alcohol insoluble substance_0.050.05
Moisture_0.3-
Water extact substanceneutralneutral
Low boiling point substance_0.5-
High boiling point substance_0.5-
Aniline_0.2-
Properties:white crystal..Turn pale and brown yellow when meet lights.Gravity:1.160(20oc), boilpoint:302ª, little soluble in water, soluble in alcohol, ether, benzene and so on.Can soluble in concentrated inorganic acid solution, but it can separate out if water is put to dilute.
Application: the product is mainly used for rubber antioxidant, dyestuff, medical intermediate, lubricating oil antioxidant, and powder stablizer.
Package: plastic knitted bags lined with black thin film, weight: 25kg per bag.
Package with metal pail, weight:200kg per pail
Package can be on basis of the user's requirements.
4: rubber antioxidant ble
Liquid bleble-wble-c
Ltemtechnical indexltemtechnical indexltemtechnical index
Viscosity(30ª)
Pa*s2.5-7.0ble effective
Content 63.1ble effective
Content 33.1
Specific gravity1.08-1.12moisture_4moisture_0.5
Volatility_0.4
Ash content_0.3
Appearancedark brown
Thick liquidappearancebrown powderappearancelight brown powder
Soluble in acetone, benzol, chloroform and alcohol, little soluble in gasoiline, nonsoluble in water.
Best grade organic acid
Widely used in rubber, plastics, cosmetics, pharmaceuticals, chemical auxiliary agent industries etc.
Terms specification
Grade no.200no.400no.800
Iodine value, _2.04.08.0
Sapon value206-211203-214193-220
Acid value205-210202-212192-218
Color, _200400400
Titer, _54-5754 52
Moisture, %_0.20.20.3
Inorganic, %_ 0.0010.0010.0
Packing: in net 25kg polywoven bags
Packing: in net 25kg polywoven bags
Terms Specification
Grade Best quality Better quality Quality
Hazen Color,f_ 20 30 70
Glycerine,% fª 99.5 98.0 95.0
Dencity (20c g/ml)fª 1.2572 1.2559 1.2481
Chloride(Cl,%)fª 0.001 0.01 -
Sulphuric Ash % f_ 0.01 0.01 0.01
Acidity or Alkalinity (mm/100g) 20 20 20
Saponification value(mmol/100g)f_ 0.64 1.0 3.0
Heavy Metal (Pb,mg/kg)f_ 5 5 -
Characters and uses: Transparent viscous liquid,with colorless,odorless and a few sweet taste with strong hygroscopicity, dissolved in water and ethyl alcohol and in ethyl ether slightly not be dissolved in benzene, chloroform,carbon tetrachloride,carbon disulfide.oil& fat negativey.It is widely used in war industry, drug, coating, textile, printing & dying, tobacco, foods, paper and daily chemicals
