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Tannic acid
Category : Inorganic chemicals/Inorganic acids
CAS NO : 1401-55-4 EC NO : 215-753-2 MF : C76H52O46 MW : 1701.1985 Specification : off-white powder, conform to National Standard GB5308-85 Packing : 25KG/woven bag Product description : Alias:?Chinese tannin; Gallotannic acid; Gallotannin; Galloylglucose; Glycerite; Penta NM digalloyl glucose; Quebracho; Tannins; 1,3,6-tris-O-(3,4,5-trihydroxybenzoyl)hexopyranose; 1,2,3,4,6-pentakis-O-[(3,4-dihydroxy-5-{[(3,4,5-trihydroxyphenyl)carbonyl]oxy}phenyl)carbonyl]hexopyranose
Molecular formula:?C76H52O46
Molecular weight:?1701.18
CAS No.:?1401-55-4
Properties:?light yellow to light brown irregular powder, with special odor. Soluble in one part of water or ethyl alcohol, soluble in acetone, insolbule in trichloromethane and diethyl ether.
Specification:?meets national standard GB5308-85。
Main technical index:
Annic acid content: ≥81%
Drying loss: ≤ 9.0%
Water insoluble matter: ≤0.6%
Total color: ? ≤2.0
Main uses
(1)This product can be widely in metal rust prevention, slurry treatment agent and pharmaceutical industry.
(2)Textile dyeing and printing.
(3)Raw material for drugs, such as for trimethoprim, etc.
(4)Raw material for chemicals, such as gallic acid, and pyrogallol, etc.
Storage:?in airtight container.
Packing:?plastic woven bag, net weight 25kg/bag.
Ddible tannic acid
Alias:?Chinese tannin; Gallotannic acid; Gallotannin; Galloylglucose; Glycerite; Penta NM digalloyl glucose; Quebracho; Tannins; 1,3,6-tris-O-(3,4,5-trihydroxybenzoyl)hexopyranose; 1,2,3,4,6-pentakis-O-[(3,4-dihydroxy-5-{[(3,4,5-trihydroxyphenyl)carbonyl]oxy}phenyl)carbonyl]hexopyranose
Molecular formula:?C76H52O46
Molecular weight:?1434-1701.18
Properties:?light yellow powder, with special odor. Soluble in one part of water or ethyl alcohol, soluble in acetone, insolbule in trichloromethane and diethyl ether.
Specification:?meets FDA “food chemical specification” 3 edition, American food FCC-IV standard.
Main technical index:
Drying loss: ≤ 9.0%
Annic acid content: ≥92%
Ignition residue: ≤1.0%
Arsenic: ≤3PPM
Heavy metal: ≤0.002%
Gum or dextrin test: Qualified
Resin substance test: Qualified
Main uses:?antixidant for food, preservative, clear agent for beverage and liquor, decolorant for soy sauce.
Storage:?in airtight container.
Packing:?plastic woven bag, net weight 25kg/bag.
Uses : used as preservative and antifouling in industry, as additive and filler in petrochemical engineering, as adhesive and surface coating in timber industry and used in tanned leather and blue ink making Synonyms : Chinese tannin;Gallotannic acid;Gallotannin;Galloylglucose;Glycerite;Penta NM digalloyl glucose;Quebracho;Tannins;1,3,6-tris-O-(3,4,5-trihydroxybenzoyl)hexopyranose;1,2,3,4,6-pentakis-O-[(3,4-dihydroxy-5-{[(3,4,5-trihydroxyphenyl)carbonyl]oxy}phenyl)carbonyl]hexopyranose; Molecular Structure : 