Properties: Monoclinic tablets, prisms from toluene. Discolors in air and light. d 1.344; mp 105°; bp760 245.5°; bp400 221.5°; bp200 197.7°; bp100 176°; bp60 161.7°; bp40 150.6°; bp20 134°; bp10 118.3°; bp5 104°. Sublimes. Volatile with steam. pK (18°) 9.48. Sol in 2.3 parts water, in alcohol, benzene, chloroform, ether; very sol in pyridine, aq alkalies. Its aq solns soon turn brown. LD50 in mice (mg/kg): 260 orally; 190 i.p. (Lehman).
Melting point: mp 105°
Boiling point: bp760 245.5°; bp400 221.5°; bp200 197.7°; bp100 176°; bp60 161.7°; bp40 150.6°; bp20 134°; bp10 118.3°; bp5 104°
pKa: pK (18°) 9.48
Density: d 1.344
Toxicity data: LD50 in mice (mg/kg): 260 orally; 190 i.p. (Lehman)
NOTE: Catechol also refers to catechin, q.v.
CAUTION: Potential symptoms of overexposure are irritation of eyes, skin, respiratory system; lacrimation, eye burns; convulsions, increased blood pressure. Direct contact may cause skin sensitization and dermatitis. Systemic effects similar to phenol, q.v. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 56; Patty's Industrial Hygiene and Toxicology
vol. 2B, G. D. Clayton, F. E. Clayton, Eds. (Wiley-Interscience, New York, 4th ed., 1994) pp 1584-1586.
Use: In photography; dyeing fur; as reagent.
Therap-Cat: Antiseptic.
产品链接: 120-80-9››