Pyrogallol
- CAS No.
- 87-66-1
- Chemical Name:
- Pyrogallol
- Synonyms
- benzene-1,2,3-triol;1,2,3-Benzenetriol;1,2,3-Trihydroxybenzene;Pyrogallo;Piral;pyrogallic;1,2,3-Trihydroxybenzen;PyrogaL;PYROGALL;fourrine85
- CBNumber:
- CB6107909
- Molecular Formula:
- C6H6O3
- Molecular Weight:
- 126.11
- MOL File:
- 87-66-1.mol
- Modify Date:
- 2024/8/24 19:19:26
| 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 |
n |
| 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 | 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 |
| LogP | -0.47 |
| CAS DataBase Reference | 87-66-1(CAS DataBase Reference) |
| 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 | |||||||||
| Precautionary statements | P273-P280-P301+P312-P302+P352+P312-P304+P340+P312-P308+P313 | |||||||||
| 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 | |||||||||
| F | 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 |
|
Pyrogallol price More Price(27)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | P0381 | Pyrogallol ≥98% (HPLC) | 87-66-1 | 25G | ₹3366.58 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | P0381 | Pyrogallol ≥98% (HPLC) | 87-66-1 | 100G | ₹7609.98 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | P0381 | Pyrogallol ≥98% (HPLC) | 87-66-1 | 250G | ₹16735.45 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | P0381 | Pyrogallol ≥98% (HPLC) | 87-66-1 | 500G | ₹23674.28 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 8.22302 | Pyrogallol for synthesis | 87-66-1 | 50G | ₹5790 | 2022-06-14 | Buy |
Pyrogallol Chemical Properties,Uses,Production
Chemical Properties
White or nearly white needle- or leaf-shaped crystals or crystalline powder.Pyrogallol is practically odorless.
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.
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
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
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chevron_right| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| JSK Chemicals | +919879767970 | Gujarat, India | 3756 | 58 | Inquiry |
| Ralington Pharma | +91-7948911722 +91-9687771722 | Gujarat, India | 1350 | 58 | Inquiry |
| Twinkle Chemi Lab Pvt Ltd | +91-9822390838 | Maharashtra, India | 12 | 58 | Inquiry |
| Phytocompounds | 91-80-40209999 | Karnataka, India | 35 | 58 | Inquiry |
| Sachin Chemicals | 91-22-28605014 | Maharashtra, India | 141 | 58 | Inquiry |
| Otto Chemie Pvt. Ltd. | +91 9820041841 | Mumbai, India | 5873 | 58 | Inquiry |
| FINAR LTD | +91 - 2717 - 616717 | New Delhi, India | 660 | 58 | Inquiry |
| CLEARSYNTH LABS LTD. | +91-22-45045900 | Hyderabad, India | 6351 | 58 | Inquiry |
| A.J Chemicals | 91-9810153283 | New Delhi, India | 6124 | 58 | Inquiry |
| SynZeal Research Pvt Ltd | +1 226-802-2078 | Gujarat, India | 6522 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| JSK Chemicals | 58 |
| Ralington Pharma | 58 |
| Twinkle Chemi Lab Pvt Ltd | 58 |
| Phytocompounds | 58 |
| Sachin Chemicals | 58 |
| Otto Chemie Pvt. Ltd. | 58 |
| FINAR LTD | 58 |
| CLEARSYNTH LABS LTD. | 58 |
| A.J Chemicals | 58 |
| SynZeal Research Pvt Ltd | 58 |
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