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LC5304 Pyrocatechol
for synthesis


Order number Packaging Quantity Price €
AC32304 Plastic bottle 250 g 25.88
AC32304 Plastic bottle 1 kg 88.2
AC32304 Metal can 5 kg 351.9


Product information
Synonyms 1,2-Dihydroxybenzene, Catechol
Hill Formula C6H6O2
Chemical formula C6H4-1,2-(OH)2
HS Code 2907 29 00
EC number 204-427-5
Molar mass 110.11 g/mol
EC index number 604-016-00-4
CAS number 120-80-9


Chemical and physical data
Solubility 430 g/l (20 °C)
Melting point 103 – 105 °C
Molar mass 110.11 g/mol
Bulk density 1.37 g/cm3 (20 °C)
pH value 6 (100 g/l, H2O, 20 °C)
Boiling point 246 °C
Vapor pressure 13 hPa (118 °C)
Explosion limit 1.97 %(V)
Flash point 127 °C


Safety information according to GHS
Hazard Statement(s) H302 + H312: Harmful if swallowed or in contact with skin.
H315: Causes skin irritation.
H319: Causes serious eye irritation.
Precautionary Statement(s) P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal Word Warning
Hazard Pictogram(s)
Storage class 10 – 13 Other liquids and solids
WGK WGK 2 water endangering
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
R Phrase R 21/22-36/38
Harmful in contact with skin and if swallowed.Irritating to eyes and skin.
S Phrase S 22-26-37
Do not breathe dust.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable gloves.
Categories of danger harmful, irritant
Hazard Symbol



Transport information
Declaration (transport by sea) IMDG-Code UN 2811 TOXIC SOLID, ORGANIC, N.O.S.(1,2-DIHYDROXYBENZENE), 6.1, III
Declaration (transport by air) IATA-DGR UN 2811 TOXIC SOLID, ORGANIC, N.O.S.(1,2-DIHYDROXYBENZENE), 6.1, III


Toxicological data
LD 50 oral LD50 rat 260 mg/kg
LD 50 dermal LD50 rabbit 800 mg/kg


Assay (GC, area%) ≥ 99 %
Melting range
– lower value
≥ 103 °C
– upper value ≤ 105 °C
Identity (IR) passes test