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A6648612

Pyrogallic , AR , 87-66-1

Synonym(s):
1,2,3-Trihydroxybenzene;2,3-Dihydroxyphenol;Pyrogallic acid;Pyrogallic acid, 1,2,3-Trihydroxybenzene;Pyrogallol

CAS NO.:87-66-1

Empirical Formula: C6H6O3

Molecular Weight: 126.11

MDL number: MFCD00002192

EINECS: 201-762-9

Pack Size Price Stock Quantity
100G RMB50.40 In Stock
500G RMB210.40 In Stock
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Update time: 2022-07-08

PRODUCT 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: 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

Description and Uses

Pyrogallol is a natural oxidant that can generate superoxide (O2-) in alkaline solutions through autoxidation to a semiquinone radical. Importantly, the semiquinone radical can react with O2- in an acidic environment to produce a quinone and H2O2. Pyrogallol autoxidation is used in superoxide dismutase activity assays. It can also be used in assays to assess antioxidant capacity. Pyrogallol is used in some biological systems as an O2- scavenger. In other biological systems, it is used as an O2- generator. Pyrogallol effectively scavenges DPPH radical and ABTS+ in vitro. Pyrogallol is a product of tannin degradation to gallic acid by ruminant microbes and has hepatotoxic and nephrotoxic effects in vivo.

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

Safety

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
8
TSCA  Yes
HS Code  2907 29 00
HazardClass  6.1
PackingGroup  III
Toxicity LD50 orally in rabbits: 1.6 g/kg (Dollahite)

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