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Pyrogallol

Pyrogallol
Pyrogallol structure
CAS No.
87-66-1
Chemical Name:
Pyrogallol
Synonyms
Piral;PyrogaL;PYROGALL;Pyrogallo;fourrine85;fourrinepg;pyrogallic;C.I. 76515;Pyrogallol;AMPK&gamma
CBNumber:
CB6107909
Molecular Formula:
C6H6O3
Formula Weight:
126.11
MOL File:
87-66-1.mol

Pyrogallol Properties

Melting point:
43-47 °C(lit.)
Boiling point:
309 °C
Density 
1.112 g/mL at 25 °C(lit.)
vapor density 
4.4 (vs air)
vapor pressure 
10 mm Hg ( 167.7 °C)
refractive index 
n20/D 1.387
Flash point:
>230 °F
storage temp. 
Store below +30°C.
solubility 
water: soluble
form 
Very Fine Crystalline Powder
pka
pK1:9.03(0);pK2:11.63(+1) (25°C)
color 
White
PH
4-5 (50g/l, H2O, 20℃)
Water Solubility 
400 g/L (25 ºC)
Sensitive 
Light Sensitive
Merck 
14,8000
BRN 
907431
Stability:
Stability Stable, but decolourises in light. Combustible. Incompatible with strong oxidising agents, alkalies, metal oxides, ammonia, antipyrine, phenol, iodine, lime water, menthol, potassium permanganate, strong bases.
InChIKey
WQGWDDDVZFFDIG-UHFFFAOYSA-N
FDA 21 CFR
73.1375
CAS DataBase Reference
87-66-1(CAS DataBase Reference)
EWG's Food Scores
4-7
FDA UNII
01Y4A2QXY0
NIST Chemistry Reference
1,2,3-Benzenetriol(87-66-1)
EPA Substance Registry System
Pyrogallol (87-66-1)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS07,GHS08
Signal word  Warning
Hazard statements  H302-H312-H332-H341-H412-H302+H312+H332-H315-H319
Precautionary statements  P273-P280-P305+P351+P338-P201-P261-P304+P340-P405-P501a
Hazard Codes  Xn
Risk Statements  20/21/22-52/53-68-40-36/38
Safety Statements  22-24/25-61-36/37-26
RIDADR  UN 2811 6.1/PG 3
WGK Germany  3
RTECS  UX2800000
8
TSCA  Yes
HS Code  2907 29 00
HazardClass  6.1
PackingGroup  III
Toxicity LD50 orally in rabbits: 1.6 g/kg (Dollahite)
NFPA 704
0
3 0

Pyrogallol price More Price(36)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.22302 Pyrogallol for synthesis 87-66-1 50 g $53.83 2021-03-22 Buy
Sigma-Aldrich 1.00612 Pyrogallol GR for analysis ACS,Reag. Ph Eur 87-66-1 50 g $89.91 2021-03-22 Buy
Sigma-Aldrich 8.22302 Pyrogallol for synthesis 87-66-1 250 g $236.8 2021-03-22 Buy
Sigma-Aldrich 16040 Pyrogallol ACS reagent, ≥99% 87-66-1 100 g $108 2021-03-22 Buy
Sigma-Aldrich 06931 Pyrogallol analytical standard 87-66-1 50mg $119 2021-03-22 Buy

Pyrogallol Chemical Properties,Uses,Production

Chemical Properties

white crystalline solid

Chemical Properties

White or nearly white needle- or leaf-shaped crystals or crystalline powder.Pyrogallol is practically odorless.

Uses

Pyrogallol is used in the manufacture of various dyes; in dyeing furs, hairs, and feathers; for staining leather; in engraving;as a developer in photography; and as an analytical reagent..

Uses

Pyrogallol possesses importance as a spectrophotometric reagent in the determination of niobium and tantalum. The absorptions of niobium and tantalum complexes are usually measured at 340 and 335 nm, respectively. The niobium complex is formed in slightly acidic medium, and the tantalum complex in strongly acidic medium (4 N HC1). The absorption spectra are pH-dependen.

Uses

Complexing agent; reducing agent; alkaline solution indicator for gaseous oxygen.

Definition

ChEBI: A benzenetriol carrying hydroxy groups at positions 1, 2 and 3.

Production Methods

Pyrogallol is prepared by heating dried gallic acid at about 200°C with the loss of carbon dioxide or by the chlorination of cyclohexanol to tetrachlorocyclohexanone, followed by hydrolysis.

General Description

Odorless white to gray solid. Sinks and mixes with water.

Air & Water Reactions

Turns gray on exposure to light or air. Water soluble.

Reactivity Profile

Pyrogallol is a strong reducing agent. Reacts with alkalis, NH3, antipyrine, camphor, phenol, iron and lead salts, iodine, lime water, menthol and KMnO4.

Hazard

Toxic by ingestion and skin absorption.

Health Hazard

The toxic symptoms are similar to those of phenol. It can enter the body by absorption through skin and ingestion. The poisoning effects are nausea, vomiting, gastritis, hemolysis, methemoglobinemia, kidney and liver damage, convulsions, and congestion of lungs. High doses can cause death. Ingestion of 2–3 g of solid can be fatal to humans. The LD50 values varied widely in species. The oral LD50 value in mice is about 300 mg/kg.

Health Hazard

Inhalation of dust causes irritation of nose and throat. Ingestion may cause severe gastrointestinal irritation, convulsions, circulatory collapse, and death. Contact with eyes causes irritation. Skin contact can cause local discoloration, irritation, eczema, and death; repeated contact can cause sensitization.

Fire Hazard

Pyrogallol is probably combustible.

Contact allergens

Pyrogallol belongs to the phenols group. It is an old photograph developer and a low sensitizer in hair dyes.

Safety Profile

Human poison by ingestion and subcutaneous routes. An experimental poison by ingestion, subcutaneous, intravenous, and intraperitoneal routes. Experimental teratogenic and reproductive effects. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. 1 198 PPRSOO PYROSULFURYL CHLORIDE Readdy absorbed through the skin. Human systemic effects by ingestion: convulsions, dyspnea, gastrointestinal effects. A severe skin and eye irritant. Incompatible with alkalies, NH3, antipyrine, phenol, iron and lead salts, iodine, KMn04. When heated to decomposition it emits acrid smoke and irritating fumes. Used as a topical antibacterial agent, as an intermediate, hair dye component, and analytical reagent.

Carcinogenicity

Pyrogallol was not carcinogenic in mouse and rabbit chronic dermal studies. Mice were treated twice weekly with pyrogallol in acetone (50%) on the shaved flank for life. There was no increase in dermal or systemic tumors. A similar study in rabbits also revealed no skin tumors, although positive controls showed an increase in tumors in both mice and rabbits.
Pyrogallol was considered to be cocarcinogenic when administered dermally three times a week together with the skin carcinogen benzo[a]pyrene for 440 days; pyrogallol administered alone caused no increase in skin tumors.

Pyrogallol Preparation Products And Raw materials

Raw materials

Preparation Products


Pyrogallol Suppliers

Global( 493)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418679
86-0551-65418697 info@tnjchem.com China 3000 55
HuBei Bass Electronic Material Co.,Ltd
18971568347
bellarongl@basschemical.com CHINA 75 58
Henan DaKen Chemical CO.,LTD.
+86-371-66670886
info@dakenchem.com China 20918 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22607 55
Hangzhou FandaChem Co.,Ltd.
008615858145714
+86-571-56059825 fandachem@gmail.com CHINA 8909 55
Nanjing ChemLin Chemical Industry Co., Ltd.
025-83697070
product@chemlin.com.cn CHINA 3013 60
Shanghai Zheyan Biotech Co., Ltd.
18017610038
zheyansh@163.com CHINA 3623 58
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 29954 58
SHANDONG ZHI SHANG CHEMICAL CO.LTD
+86 18953170293
+86 0531-67809011 sales@sdzschem.com CHINA 2941 58
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
027-59599243 linda@hubeijusheng.com CHINA 28229 58

View Lastest Price from Pyrogallol manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-11-26 Pyrogallol
87-66-1
US $65.00 / Kg/Bag 1KG 99% 10T Baoji Guokang Bio-Technology Co., Ltd.
2021-11-17 Pyrogallol 87-66-1
87-66-1
US $9.50 / g 1g ≥98% 1000.00 kgs NanJing Spring & Autumn Biological Engineering CO., LTD.
2021-11-02 Pyrogallol
87-66-1
US $55.60-706.30 / KG 1KG 99% 2t Baoji Guokang Healthchem co.,ltd

Pyrogallol Spectrum


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