Description
Catalogue Number	822333
Synonyms	1,4-Dihydroxybenzene, Quinol
Description	Hydroquinone

Product Information
CAS number	123-31-9
EC index number	604-005-00-4
EC number	204-617-8
Hill Formula	C₆H₆O₂
Chemical formula	C₆H₄(OH)₂
Molar Mass	110.11 g/mol
HS Code	2907 22 00
Structure formula Image
Quality Level	MQ200

Applications
Application	Hydroquinone for synthesis. CAS 123-31-9, EC Number 204-617-8, chemical formula C₆H₄(OH)₂.

Physicochemical Information
Boiling point	287 °C (1013 hPa)
Density	1.332 g/cm3 (15 °C)
Flash point	165 °C
Ignition temperature	515 °C
Melting Point	171 °C (decomposition)
pH value	3.7 (70 g/l, H₂O)
Vapor pressure	1 hPa (132 °C)
Bulk density	600 kg/m3
Solubility	70 g/l

Toxicological Information
LD 50 oral	LD50 Rat 302 mg/kg

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H302: Harmful if swallowed. H318: Causes serious eye damage. H341: Suspected of causing genetic defects. H351: Suspected of causing cancer. H410: Very toxic to aquatic life with long lasting effects.
Precautionary Statement(s)	P202: Do not handle until all safety precautions have been read and understood. P273: Avoid release to the environment. P280: Wear protective gloves/ protective clothing/ eye protection/ face protection/ hearing protection. P301 + P312: IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P308 + P313: IF exposed or concerned: Get medical advice/ attention.
Signal Word	Danger
RTECS	MX3500000
Storage class	10 - 13 Other liquids and solids
WGK	WGK 3 highly hazardous to water
Disposal	3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.

Safety Information
Categories of danger	harmful, carcinogenic, irritant, sensitizing, mutagenic, dangerous for the environment

Storage and Shipping Information
Storage	Store at +2°C to +30°C.