catechol
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IUPAC name :benzene-1,2-diol
InChI :InChI=1/C6H6O2/c7-5-3-1-2-4-6(5)8/h1-4,7-8H
InChIKey :YCIMNLLNPGFGHC-UHFFFAOYAA
SMILES :C1=CC=C(C(=C1)O)O
cas number :120-80-9
(EINECS) number :204-427-5
eu annex :604-016-00-4
beilstein number :0471401
coe number :680
fl. number :04.029
molar refractivity :30.01 ± 0.3 cm3
parachor :237.3 ± 4.0 cm3
index of refraction :1.612 ± 0.02
surface tension :57.1 ± 3.0 dyne/cm
density :1.275 ± 0.06 g/cm3
polarizability :11.89 ± 0.5 10-24cm3
XlogP : 1.60
XlogP3 : 0.90
molecular weight : 110.1106400 (IUPAC)
formula :C6 H6 O2
BioActivity Analysis :68349
pherobase floral:view
NMR Predictor :Predict
 
 
export tariff code :2907.29.6000
fda reg :unspecified

Suppliers :
Nanjing :Catechol
orders in chinese only.
Penta :catechol
Pfaltz & Bauer :Pyrocatechol
99+% - Carc.
TCI AMERICA :Catechol
>99.0%(GC)

organoleptics :

properties :
appearence :white to tan powder
assay : 97.00 to 100.00 %   
Food Chemicals Codex Listed :No
melting point : 103.00 to 105.00 °C. @ 760.00 mm Hg
boiling point : 244.00 to 246.00 °C. @ 760.00 mm Hg
vapor pressure :1.00000 mm/Hg @ 75.00 °C.
vapor density :3.8 ( Air = 1 )
flash point : 279.00  °F.  TCC  ( 137.22 °C. )
logP (o/w) : 0.88

safety :
most important hazard(s) :Xn - Harmful.
  R 21/22 - Harmful in contact with skin and if swallowed.
R 36/38 - Irritating to skin and eyes.
S 02 - Keep out of the reach of children.
S 22 - Do not breath dust.
S 24/25 - Avoid contact with skin and eyes.
S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S 36/37/39 - Wear suitable clothing, gloves and eye/face protection.
Oral Toxicity(LD50) : 
  Oral-Guineapig    210.00  mg/kg
Advances in Food Research. Vol. 3, Pg. 197, 1951.

Intraperitoneal-Mouse    68.00  mg/kg
Pharmacology and Toxicology Vol. 64, Pg. 247, 1989.

Oral-Mouse    260.00  mg/kg
Advances in Food Research. Vol. 3, Pg. 197, 1951.

Oral-Rabbit    200.00  mg/kg

Oral-Rat    260.00  mg/kg
Advances in Food Research. Vol. 3, Pg. 197, 1951.

Dermal Toxicity(LD50) : 
  Skin-Rabbit  800.00  mg/kg
Advances in Food Research. Vol. 3, Pg. 197, 1951.

Subcutaneous-Mouse  247.00  mg/kg
Industrial Health. Vol. 5, Pg. 143, 1967.

Subcutaneous-Rabbit  225.00  mg/kg
Journal of Agricultural and Food Chemistry. Vol. 17, Pg. 497, 1969.

Inhalation Toxicity(LC50) : 
  Not determined
 

safety in use :
Category :cosmetic agents
 
recommendation for catechol fragrance usage levels up to :
 not for fragrance use.
recommendation for catechol flavor usage levels up to :
 not for flavor use.

safety references :
EPI System :view
IUCLID :view
NIOSH International Chemical Safety Cards :search
NIOSH Pocket Guide :search
NLM Hazardous Substances Data Bank :search
Chemical Carcinogenesis Research Information System :Search
AIDS Citations :Search
Cancer Citations :Search
Toxicology Citations :Search
Carcinogenic Potency Database :Search
EPA GENetic TOXicology :Search
Env. Mutagen Info. Center :Search
NLM Developmental and Reproductive Toxicity :Search
National Toxicology Program :Search
Canada Domestic Sub. List :Yes
EPA Chem. Sub. Inventory : Yes
WISER :UN 2811
 
WGK Germany :2
 
 
 
 
benzene-1,2-diol
(EINECS) number :204-427-5
RTECS :120-80-9
chemidplus :000120809
EPA/NOAA CAMEO :hazardous materials
EPA Substance Registry Services :120-80-9
dtp/nci :1573

references :
 
benzene-1,2-diol
fl. number :04.029
NIST Chemistry WebBook :651260460
pubchem :151602

Cosmetics :
Cosmetic uses : hair dyeing agents
not used anymore

other :
CosIng :cosmetic data
VCF-Online: VCF Volatile Compounds in Food
synonyms :
1,2-benzene diol
 benzene-1,2-diol
1,2-dihydroxybenzene
ortho-hydroquinone
ortho-hydroxyphenol
 phthalhydroquinone
 pyrocatechinic acid
 pyrocatechol

soluble in :
 alcohol
 water, 461000 mg/L @ 25C

potential uses :
 medical

natural occurrence in :    note
 bulbophyllum involutum S
 Bulbophyllum weddellii S
PbMdcoffee  

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