DIBENZO(A,I)PYRENE Chemical Properties

Melting point:

281.5°C

Boiling point:

378.4°C (rough estimate)

Density 

1.1762 (estimate)

refractive index 

1.9130 (estimate)

storage temp. 

2-8°C

solubility 

Chloroform (Very Slightly, Heated), Dichloromethane (Slightly, Heated)

form 

Solid

color 

Green-yellow needles from toluene

IARC

2B (Vol. 92) 2010

EPA Substance Registry System

Dibenzo[a,i]pyrene (189-55-9)

Safety Information

Hazard Codes 

Xn

Risk Statements 

40

Safety Statements 

36/37

RIDADR 

3077

RTECS 

DI5775000

HazardClass 

9

PackingGroup 

III

Hazardous Substances Data

189-55-9(Hazardous Substances Data)

Toxicity

mma-sat 20 mg/plate PNASA6 72,5135,75

DIBENZO(A,I)PYRENE Usage And Synthesis

Uses

Dibenzo[a,i]pyrene is a polycyclic aromatic hydrocarbon (PAH) with potent carcinogenic activity. Dibenzo[a,i]pyrene was shown to induce DNA adduction, tumorigenicity as well as Ki-ras oncogene mutations in strain A/J mouse lung. Dibenzo[a,i]pyrene has been shown to be present in cigarette smoke condensate and in automobile exhaust gas in small quantities.

Definition

ChEBI: Dibenzo[a,i]pyrene is an ortho- and peri-fused polycyclic arene.

General Description

Colorless solid. Water insoluble.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Vigorous reactions, sometimes amounting to explosions, can result from the contact between aromatic hydrocarbons, such as DIBENZO(A,I)PYRENE, and strong oxidizing agents. They can react exothermically with bases and with diazo compounds. Substitution at the benzene nucleus occurs by halogenation (acid catalyst), nitration, sulfonation, and the Friedel-Crafts reaction.

Health Hazard

Inhalation of material may be harmful. Contact may cause burns to skin and eyes. Inhalation of Asbestos dust may have a damaging effect on the lungs. Fire may produce irritating, corrosive and/or toxic gases. Some liquids produce vapors that may cause dizziness or suffocation. Runoff from fire control may cause pollution.

Fire Hazard

Some may burn but none ignite readily. Containers may explode when heated. Some may be transported hot.

Safety Profile

Confirmed carcinogen withexperimental neoplastigenic and tumorigenic data.Mutation data reported. When heated to decomposition itemits acrid smoke and irritating fumes.

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