1,2-Benzenediol

Modify Date: 2024-01-01 18:58:36

1,2-Benzenediol Structure
1,2-Benzenediol structure
 Common Name 1,2-Benzenediol
CAS Number 120-80-9 Molecular Weight 110.111
Density 1.3±0.1 g/cm3 Boiling Point 245 ºC
Molecular Formula C6H6O2 Melting Point 103-106 ºC
MSDS Chinese USA Flash Point 131 ºC
Symbol GHS05 GHS06 GHS08
GHS05, GHS06, GHS08		 Signal Word Danger

 Names

Name catechol
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.3±0.1 g/cm3
Boiling Point 245 ºC
Melting Point 103-106 ºC
Molecular Formula C6H6O2
Molecular Weight 110.111
Flash Point 131 ºC
Exact Mass 110.036781
PSA 40.46000
LogP 0.88
Vapour density 3.8 (vs air)
Vapour Pressure 0.0±0.5 mmHg at 25°C
Index of Refraction 1.612
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.
Water Solubility 430 g/L (20 ºC)

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
UX1050000
CHEMICAL NAME :
Pyrocatechol
CAS REGISTRY NUMBER :
120-80-9
BEILSTEIN REFERENCE NO. :
0471401
LAST UPDATED :
199712
DATA ITEMS CITED :
75
MOLECULAR FORMULA :
C6-H6-O2
MOLECULAR WEIGHT :
110.12
WISWESSER LINE NOTATION :
QR BQ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
260 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
110 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
260 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
68 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
247 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Mammal - dog
DOSE/DURATION :
130 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Mammal - dog
DOSE/DURATION :
40 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Mammal - cat
DOSE/DURATION :
100 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
200 mg/kg
TOXIC EFFECTS :
Behavioral - altered sleep time (including change in righting reflex) Blood - leukopenia Blood - methemoglobinemia-carboxyhemoglobin
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
800 mg/kg
TOXIC EFFECTS :
Skin and Appendages - primary irritation (after topical exposure) Nutritional and Gross Metabolic - weight loss or decreased weight gain
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
225 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
210 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
150 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
200 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Amphibian - frog
DOSE/DURATION :
160 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Parenteral
SPECIES OBSERVED :
Amphibian - frog
DOSE/DURATION :
160 mg/kg
TOXIC EFFECTS :
Peripheral Nerve and Sensation - spastic paralysis with or without sensory change Behavioral - convulsions or effect on seizure threshold
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Mammal - species unspecified
DOSE/DURATION :
240 mg/kg
TOXIC EFFECTS :
Behavioral - changes in motor activity (specific assay) Behavioral - muscle contraction or spasticity Lungs, Thorax, or Respiration - dyspnea
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Bird - chicken
DOSE/DURATION :
98 gm/kg/4W-I
TOXIC EFFECTS :
Related to Chronic Data - death
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
437 gm/kg/2Y-C
TOXIC EFFECTS :
Tumorigenic - Carcinogenic by RTECS criteria Gastrointestinal - tumors
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
645 gm/kg/96W-C
TOXIC EFFECTS :
Tumorigenic - Carcinogenic by RTECS criteria Gastrointestinal - tumors
TYPE OF TEST :
TD - Toxic dose (other than lowest)
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
60640 mg/kg/24W-C
TOXIC EFFECTS :
Tumorigenic - neoplastic by RTECS criteria Gastrointestinal - tumors
TYPE OF TEST :
TD - Toxic dose (other than lowest)
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
349 gm/kg/2Y-C
TOXIC EFFECTS :
Tumorigenic - Carcinogenic by RTECS criteria Gastrointestinal - tumors
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
171 gm/kg/51W-C
TOXIC EFFECTS :
Tumorigenic - Carcinogenic by RTECS criteria Gastrointestinal - tumors
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
1 gm/kg
SEX/DURATION :
female 11 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - litter size (e.g. # fetuses per litter; measured before birth)
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Subcutaneous
DOSE :
5 mg/kg
SEX/DURATION :
female 1 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Maternal Effects - ovaries, fallopian tubes
TYPE OF TEST :
Unscheduled DNA synthesis
TYPE OF TEST :
Micronucleus test
TYPE OF TEST :
Micronucleus test

MUTATION DATA

TYPE OF TEST :
Mutation test systems - not otherwise specified
TEST SYSTEM :
Rodent - rabbit Bone marrow
REFERENCE :
AJIMD8 American Journal of Industrial Medicine. (Alan R. Liss, Inc., 41 E. 11th St., New York, NY 10003) V.1- 1980- Volume(issue)/page/year: 7,485,1985 *** REVIEWS *** ACGIH TLV-Animal carcinogen DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 ACGIH TLV-TWA 23 mg/m3 (5 ppm) (skin) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 IARC Cancer Review:Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 15,155,1977 IARC Cancer Review:Human No Adequate Data IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 15,155,1977 IARC Cancer Review:Group 3 IMSUDL IARC Monographs, Supplement. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) No.1- 1979- Volume(issue)/page/year: 7,56,1987 TOXICOLOGY REVIEW MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 47,75,1978 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 5 ppm (20 mg/m3) JAN 1993 OEL-BELGIUM:TWA 5 ppm (23 mg/m3) JAN 1993 OEL-DENMARK JAN 1993 OEL-FINLAND:TWA 5 ppm (22 mg/m3);STEL 10 ppm (45 mg/m3) JAN 1993 OEL-FRANCE:TWA 5 ppm (20 mg/m3) JAN 1993 OEL-THE NETHERLANDS:TWA 5 ppm (20 mg/m3) JAN 1993 OEL-SWITZERLAND:TWA 5 ppm (23 mg/m3) JAN 1993 OEL-UNITED KINGDOM:TWA 5 ppm (20 mg/m3) JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO CATECHOL-air:10H TWA 5 ppm (Sk) REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - M1763 No. of Facilities: 147 (estimated) No. of Industries: 4 No. of Occupations: 6 No. of Employees: 642 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - M1763 No. of Facilities: 700 (estimated) No. of Industries: 8 No. of Occupations: 15 No. of Employees: 13516 (estimated) No. of Female Employees: 5799 (estimated)

 Safety Information

Symbol GHS05 GHS06 GHS08
GHS05, GHS06, GHS08
Signal Word Danger
Hazard Statements H301 + H311-H315-H317-H318-H332-H341
Precautionary Statements P280-P301 + P310-P305 + P351 + P338-P312
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Faceshields;Gloves
Hazard Codes Xn:Harmful
Risk Phrases R21/22;R36/38
Safety Phrases S22-S26-S37
RIDADR UN 2811 6.1/PG 3
WGK Germany 2
RTECS UX1050000
Packaging Group III
Hazard Class 6.1
HS Code 2907291000

 Synthetic Route

 Customs

HS Code 2907291000
Summary 2907291000 pyrocatechol。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。Lowest tariff:4.0%。General tariff:11.0%

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 Synonyms

1,2-dihydroxybenzene
Phthalsaeure-diheptylester
di-n-octyl phthalate
phthalic acid diheptyl ester
EINECS 204-427-5
diheptyl
1,2-benzenediol
1,2-Benzenediol,1,2-Dihydroxybenzene,Catechol
Dihept-1-yl phthalate
DI-N-HEPTYL PHTHALAT
Heptyl phthalate
benzene-1,2-diol
o-dihydroxy-benzene
Diheptyl o-phthalate
1,2-benzenedicarboxylic acid diheptyl ester
Phthalic acid diheptyl
MFCD00002188
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