production capacity: 600 t/year
other name:pyrogallol, 1,2,3 - benzenetriol
chemical name:1,2,3 - trihydroxybenxene
mol. form and mol .wt.:ch6(oh)3 126.11
description:a lustrous crystalline white powder, soluble in 2 proportions of water, 1 alcohol and 2 ether.
specification:comply with the requirements both u.s.a." reagent
chemical and standard" by joseph rosin fifth-edition and jis k8780 standard.
technical data: tech grade cp grade ar grade
appearance: white powder white powder white powder
purity %: ≥99.2 ≥99.5 ≥99.8
water solubility: clear clear clear
melting point ℃ : ≤131~135 ≤132~135 ≤131~135
residue on ignition %: ≤ 0.025 ≤ 0.02 ≤ 0.02
chloride %: ≤ 0.002 ≤ 0.001 ≤ 0.001
sulphate %: ≤ 0.005 ≤ 0.005 ≤ 0.005
heavy metal ppm: ≤ 5 ≤ 5 ≤ 5
usage: used in analyse&mensuration of oxygen, antimony, bismuth, cerium, iron, molybdenum, tantalum and niobium etc; also widely used in pharmaceutical, dyestuff, chemical and food industries; developer in photography.
storage:keep in a well-closed container.
packing:circinal-paper barrel with plastic bag inside, n.w. 25kg/bag.
production capacity: 800 t/year
other name:gallic acid progal, pg
chemical name:propyl - 3,4,5 - trihydroxybenzoate
mol. form and mol. wt.:c10h12o5;212.21
description:a white to creamy-white crystalline powder; odourless.
soluble in 1000 proportions of water, 3 alcohol, 3 aether, and 2000 arachis oil.
specification:comply with the requirement of both state standard gb3626-82 and b.p.1980 edition, u.s.p.xxi(1985)edition; u.s.a.fcc-iv standard.
technical data:
appearance: white or almost white crystalline powder
melting point: ℃ 146--150
as: % ≤0.0003
heavy metal: % ≤0.001
loss on drying: % ≤0.5
residue on ignition: % ≤ 0.1
colour number: fan ≤50
usage: mainly used as antioxidant additive in fattiness, oleaginous foods and
medicinal preparations.
storage:escape from light, storing in the airtight vessel, prevent from contacting with metal .
packing:circinal-paper barrel with plastic bag inside, n.w. 25kg/drum.