Phthalic anhydride

Modify Date: 2025-08-20 17:38:04

Phthalic anhydride Structure
Phthalic anhydride structure
 Common Name Phthalic anhydride
CAS Number 85-44-9 Molecular Weight 148.116
Density 1.4±0.1 g/cm3 Boiling Point 284 ºC
Molecular Formula C8H4O3 Melting Point 129-132 ºC
MSDS Chinese USA Flash Point 152 ºC
Symbol GHS05 GHS07 GHS08
GHS05, GHS07, GHS08		 Signal Word Danger

 Names

Name phthalic anhydride
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.4±0.1 g/cm3
Boiling Point 284 ºC
Melting Point 129-132 ºC
Molecular Formula C8H4O3
Molecular Weight 148.116
Flash Point 152 ºC
Exact Mass 148.016037
PSA 43.37000
LogP 1.60
Vapour density 5.1 (vs air)
Vapour Pressure 0.0±0.6 mmHg at 25°C
Index of Refraction 1.613
Stability Stable. Combustible. Incompatible with strong oxidizing agents, strong bases, moisture, strong acids. Dust may form an explosive mixture with air.
Water Solubility 6 g/L (20 ºC)

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
TI3150000
CHEMICAL NAME :
Phthalic anhydride
CAS REGISTRY NUMBER :
85-44-9
LAST UPDATED :
199712
DATA ITEMS CITED :
48
MOLECULAR FORMULA :
C8-H4-O3
MOLECULAR WEIGHT :
148.12
WISWESSER LINE NOTATION :
T56 BVOVJ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1530 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity)
TYPE OF TEST :
LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
>210 mg/m3/1H
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 :
1500 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 :
800 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 :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
>10 gm/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 - guinea pig
DOSE/DURATION :
100 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
100 mg/m3/2H/2W-I
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - structural or functional change in trachea or bronchi Liver - other changes
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
6 gm/kg/42D-I
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - other changes Gastrointestinal - gastritis Gastrointestinal - other changes
TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
DOSE :
1 mg/m3
SEX/DURATION :
male 45 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Paternal Effects - spermatogenesis (incl. genetic material, sperm morphology, motility, and count) Reproductive - Paternal Effects - testes, epididymis, sperm duct
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
DOSE :
203 mg/kg
SEX/DURATION :
female 8-10 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - other developmental abnormalities

MUTATION DATA

TYPE OF TEST :
DNA damage
TEST SYSTEM :
Rodent - rat Liver
REFERENCE :
EMMUEG Environmental and Molecular Mutagenesis. (Alan R. Liss, Inc., 41 E. 11th St., New York, NY 10003) V.10- 1987- Volume(issue)/page/year: 24,181,1994 *** REVIEWS *** ACGIH TLV-Not classifiable as a human 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 6.1 mg/m3 (1 ppm) 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 TOXICOLOGY REVIEW BPCT** Progress Report from the Environmental Protection Agency to NIOSH on Benzenepolycarboxylates, 1974 Volume(issue)/page/year: -,183,1974 TOXICOLOGY REVIEW EVHPAZ EHP, Environmental Health Perspectives. (U.S. Government Printing Office, Supt of Documents, Washington, DC 20402) No.1- 1972- Volume(issue)/page/year: 4,3,1973 TOXICOLOGY REVIEW CMTVAS Cahiers de Medecine du Travail. (Association Professionnelle Belge des Medecine du Travail, rue du Bultia, 6280 Gerpinnes, Belgium) V.1- 1963- Volume(issue)/page/year: 10(3),49,1973 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-air:TWA 2 ppm (12 mg/m3) 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: 3,212,1971 OSHA PEL (Gen Indu):8H TWA 2 ppm (12 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 2 ppm (12 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):8H TWA 2 ppm (12 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):8H TWA 2 ppm (12 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 1 ppm (6 mg/m3) JAN 1993 OEL-BELGIUM:TWA 1 ppm (6.1 mg/m3) JAN 1993 OEL-DENMARK:TWA 5 mg/m3 JAN 1993 OEL-FINLAND:TWA 2 mg/m3;STEL 3 mg/m3;Skin JAN 1993 OEL-FRANCE:STEL 6 mg/m3 JAN 1993 OEL-GERMANY:TWA 5 mg/m3 JAN 1993 OEL-HUNGARY:TWA 1 mg/m3;STEL 2 mg/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 1 ppm (6 mg/m3) JAN 1993 OEL-THE PHILIPPINES:TWA 2 ppm (12 mg/m3) JAN 1993 OEL-POLAND:TWA 1 mg/m3 JAN 1993 OEL-RUSSIA:STEL 1 mg/m3;Skin JAN 1993 OEL-SWEDEN:TWA 1 ppm (6 mg/m3);STEL 2 ppm (12 mg/m3) JAN 1993 OEL-SWITZERLAND:TWA 0.8 ppm (5 mg/m3);STEL 1.6 ppm (10 mg/m3) JAN 1993 OEL-UNITED KINGDOM:TWA 1 ppm (6 mg/m3);STEL 4 ppm (24 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 PHTHALIC ANHYDRIDE-air:10H TWA 1 ppm 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 - 59230 No. of Facilities: 10056 (estimated) No. of Industries: 128 No. of Occupations: 90 No. of Employees: 134716 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 59230 No. of Facilities: 5265 (estimated) No. of Industries: 72 No. of Occupations: 67 No. of Employees: 81312 (estimated) No. of Female Employees: 14675 (estimated)

 Safety Information

Symbol GHS05 GHS07 GHS08
GHS05, GHS07, GHS08
Signal Word Danger
Hazard Statements H302-H315-H317-H318-H334-H335
Precautionary Statements P261-P280-P284-P304 + P340 + P312-P305 + P351 + P338 + P310-P342 + P311
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Faceshields;Gloves
Hazard Codes Xn:Harmful
Risk Phrases R22;R37/38;R41;R42/43
Safety Phrases S23-S24/25-S26-S37/39-S46-S22
RIDADR 2214
WGK Germany 1
RTECS TI3150000
Packaging Group III
Hazard Class 8
HS Code 2917350000

 Synthetic Route

 Customs

HS Code 2917350000
Summary HS:2917350000 isobenzofuran-1,3-dione VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB MFN tariff:6.5% General tariff:30.0%

 Articles38

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 Synonyms

1,3-DIHYDRO-IMIDAZOL-2-ONE
4-imidazolin-2-one
MFCD00005918
1H-imidazol-2(3H)-one
phthallic anhydride
Phthalic anhydride
isobenzofuran-1,3-dione
1,3-dihydro-2H-imidazol-2-one
2-hydroxyimidazole
1,3-isobenzofurandione
2,3-dihydro-1H-imidazol-2-one
2,3-DIHYDRO-IMIDAZOL-2-ONE
EINECS 201-607-5
1,3-dihydroimidazolone
shellsd-8591
1,3-dihydroisobenzofuran-1,3-dione
2(3H)-Oxo-1H-imidazole
o-Phthalic acid anhydride
1,3-dihydro-2h-imidazol-2-on
2,3-Dihydroimidazole-2-one
sd8591
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