China Wholesale Tannic Acid with Best Price 70% 80% 99% Suppliers - Pyrogallol – Sanjiang

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China Wholesale Tannic Acid with Best Price 70% 80% 99% Suppliers - Pyrogallol – Sanjiang Detail:

Introduction: Pyrogallol

is a chemical reagent and chemical raw material with multiple uses. It is produced in the manner it was first prepared by Scheele (1786): heating gallic acid. Presently gallic acid is obtained from tannin. Heating induces decarboxylation 。It is widely used in pharmaceutical synthesis, dyes, foods, pesticides and electronic products

Appearance：White crystalline powder

Chemical name: Benzene-1,2,3-triol

Other names：1,2,3-Trihydroxybenzene，Pyrogallic acid

Molecular formula: C6H3(OH)3

Molecular weight: 126.11

Melting point：309°C

CAS Number：87-66-1

Property: This product is a white shiny crystalline powder, soluble in 2 parts of water, 1 part of ethanol or 2 parts of ether.

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Specifications

In line with the national industry standard LY-T 2862; in line with the US “chemical reagent standards”; Lawson V version and Japanese national standard K8780 reagent specifications.

Feature

Melting point is 131 ～ 134 ℃, boiling point is 309 ℃, relative density is 1.46. UVλ_max2. 88nm when pH =5.4 in water. Soluble in water, alcohol, ether, slightly soluble in benzene, chloroform and carbon disulfide.

Storage

Avoid moisture and light, sealed tightly, no contact with metal.

Packing

The product is packed in cardboard drums with a net weight of 25 kg per barrel.

Application

1. Cosmetic additives

2. Important catalysts and additives in chemical industry

3. Strong reducing agent and fungicidal in medicine

4. One of the important formulas of feed

5. Highly effective and low residual pesticide

6. New imaging materials, metallurgical flotation agent

Specifications

Specifications
Implementation standards	A.R	C.P	Enterprise Standard
Purity	≥99.5%	≥99.0%	≥98.0%
Melting point	131~136	131~136	131~136
Residue on ignition	≤0.025%	≤0.05%	≤0.1%
Water solubility	Clear without turbidity	Clear without turbidity	—
Chloride	≤0.001%	≤0.002%	—
Sulfate	≤0.010%	≤0.010%	—
Gallic acid test	Without turbidity	Without turbidity	—
heavy metal	≤10 ug/g	—	—
Packing	Woven bag, 25kg / bag	cardboard bucket, 25kg/drum	cardboard bucket，25kg/

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