Pyrocatechol CAS NO.120-80-9

pyrocatechol basic information

product name:	pyrocatechol
synonyms:	1,2-benzenediol (pyrocatechol);1,2-benzenediol[qr];1,2-dihydroxybenzene[qr];2-hydroxyphenol;2-hydroxyphenol[qr];ai3-03995[qr];benzene, o-dihydroxy-;benzene,1,2-dihydroxy-
cas:	120-80-9
mf:	c6h6o2
mw:	110.11
einecs:	204-427-5
product categories:	intermediates;aromatic phenols;aromatics;miscellaneous reagents;building blocks;chemical synthesis;organic building blocks;oxygen compounds;polyols
mol file:	120-80-9.mol

pyrocatechol chemical properties

mp	103 °c
bp	245 °c(lit.)
density	1,371 g/cm3
vapor density	3.8 (vs air)
vapor pressure	1 mm hg ( 75 °c)
fp	279 °f
storage temp.	store at rt.
water solubility	430 g/l (20 ºc)
merck	14,7999
brn	471401
stability:	stable. substances to be avoided include acid chlorides, acid anhydrides, bases, oxidizing agents, nitric acid. light sensitive; may discolour on exposure to air. combustible.
cas database reference	120-80-9(cas database reference)
nist chemistry reference	1,2-benzenediol(120-80-9)
epa substance registry system	1,2-benzenediol(120-80-9)

safety information

hazard codes	xn
risk statements	21/22-36/38-68-43
safety statements	22-26-37-39
ridadr	un 2811 6.1/pg 3
wgk germany	2
rtecs	ux1050000
hazardclass	6.1
packinggroup	iii
hazardous substances data	120-80-9(hazardous substances data)

msds information

provider	language
acros	english
sigmaaldrich	english
alfa	english

pyrocatechol usage and synthesis

chemical properties	off-white powder
general description	solid; white; odorless. sinks and mixes with water.
air & water reactions	turns brown on exposure to air and light, especially when moist. water soluble. aqueous solutions soon turn brown on exposure to air and light.
reactivity profile	poisonous gases may be produced when heated. pyrocatechol may form toxic fumes at high temperatures. [uscg, 1999]. pyrocatechol can react with acid chlorides, acid anhydrides, bases and oxidizing agents. pyrocatechol reacts violently on contact with concentrated nitric acid. pyrocatechol acts as a reducing agent .
health hazard	dust: irritating to eyes, nose and throat. if inhaled will cause coughing or difficult breathing. solid: will burn skin and eyes. harmful if swallowed.
fire hazard	combustible. poisonous gases may be produced when heated. may form toxic fumes at high temperatures.

pyrocatechol preparation products and raw materials

raw materials

hydrogen peroxide-->phenol-->chlorosulfonic acid-->2-butanone-->cyclohexanone-->hydroquinone-->4-methyl-2-pentanone-->guaiacol-->montmorillonite k 10-->2-chlorophenol-->creosote-->3,4-dihydroxybenzoic acid-->2-methoxy-4-methylphenol

preparation products

hydroquinone-->carbofuran-->ethyl vanillin-->piperonyl aldehyde-->propoxur-->2,3-dihydro-2,2-dimethyl-7-benzofuranol -->4'-formylbenzo-15-crown 5-ether-->1,3-benzodioxole-->diethofencarb-->2-(5-bromo-2-pyridylazo)-5-(diethylamino)phenol-->1,2-dimethoxybenzene-->2,3-dihydro-1,4-benzodioxine-2-carbonyl chloride-->4-tert-butylcatechol-->1-bromo-1-cyclopentene-->o-bromanil-->3,4-(methylenedioxy)phenylacetonitrile-->benzo-15-crown-5-->1,2-diethoxybenzene-->2-isopropoxyphenol-->[[o-(allyloxy)phenoxy]methyl]oxirane -->2-[(2-methyl-2-propenyl)oxy]-phenol-->piperonyl formaldehyde-->benzo[1,3]dioxole-5-sulfonyl chloride-->2,3-dihydro-1,4-benzodioxin-2-methanol 4-methylbenzenesulfonate-->2-chloro-3',4'-dihydroxyacetophenone-->catecholborane-->piperonyl chloride-->2-(allyloxy)phenol-->2-hydroxymethyl-1,4-benzodioxane-->1-iodoheptane-->pyrocatechol violet-->adrenalone-->1-(3,4-dihydroxyphenyl)-2-[(1-methylethyl)amino]ethan-1-one -->4-bromocatechol-->isoproterenol

service we provide:

1. mixed container, we can mix different items in one container.

2. quality control, before shipment, free sample for test. after shipment, keep sample for 3 years

3. prompt shipment with professional documents

4. packing as your request, with photo before shipment