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Chemical Name:
Db(a,h)a;NSC 22433;1,2,5,6-DBA;Isopentaphene;Dibenzo(a.h)a;benzo[k]tetraphene;Benz[a,h]anthracene;rcrawastenumberu063;1,2-Benznaphthacene;DIBEN[A,H]ANTHRACENE
Molecular Formula:
Formula Weight:
MOL File:

Dibenz[a,h]anthracene Properties

Melting point:
262-265 °C(lit.)
Boiling point:
524 °C(lit.)
1.282 g/cm3
refractive index 
1.8120 (estimate)
Flash point:
-18 °C
storage temp. 
Stable. Combustible. Incompatible with strong oxidizing agents.
CAS DataBase Reference
53-70-3(CAS DataBase Reference)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  T,N,F
Risk Statements  45-50/53-67-65-38-11-52/53-36/37/38
Safety Statements  53-45-60-61-62-26
RIDADR  UN 3077 9/PG 3
WGK Germany  3
RTECS  HN2625000
HazardClass  6.1(b)
PackingGroup  III
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501
H350 May cause cancer Carcinogenicity Category 1A, 1B Danger
H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501
H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:
P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been read and understood.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P391 Collect spillage. Hazardous to the aquatic environment
P308+P313 IF exposed or concerned: Get medical advice/attention.
P405 Store locked up.
P501 Dispose of contents/container to..…

Dibenz[a,h]anthracene price More Price(6)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 91861 Dibenz[a,h]anthracene certified reference material, TraceCERT 53-70-3 10mg $81.9 2018-11-20 Buy
Sigma-Aldrich BCR138 Dibenz[a,h]anthracene BCR 53-70-3 100mg $547 2018-11-20 Buy
TCI Chemical D0145 Dibenz[a,h]anthracene >98.0%(GC) 53-70-3 100mg $46 2018-11-22 Buy
Sigma-Aldrich 91861 Dibenz[a,h]anthracene certified reference material, TraceCERT 53-70-3 1g $1430 2018-11-23 Buy
Sigma-Aldrich 48574 Dibenz[a,h]anthracene analytical standard 53-70-3 48574 $188 2018-11-23 Buy

Dibenz[a,h]anthracene Chemical Properties,Uses,Production


1, 2:5, 6-DIBENZANTHRACENE is a crystalline aromatic hydrocarbon. It is a component of coal tars, shale oils, and soots (IARC, 1985) and has been detected in gasoline engine exhaust, coke oven emissions, cigarette smoke, charcoal broiled meats, vegetation near heavily traveled roads, and surface water and soils near hazardous waste sites. It is a kind of carcinogenic compound, and thus being mainly used for the research purpose. For example, in biological research, it is a mutagen used to induce tumorigenesis.

Chemical Properties

white to light yellow crystalline solid

Chemical Properties

Dibenz(a,h)anthracene is a colorless, crystal- line solid. PAHs are compounds containing multiple benzene rings and are also called polynuclear aromatic hydrocarbons.


Dibenz[a,h]anthracene is a polycyclic aromatic hydrocarbon (PAH) and a known carcinogen. Dibenz[a,h]anthracene has produced positive results in bacterial DNA damage and mutagenicity assays and in mammalian cell DNA damage, mutagenicity and cell transformation assays.

General Description

White crystals or pale yellow solid. Sublimes.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

1,2:5,6-DIBENZANTHRACENE is incompatible with strong oxidizing agents. Is oxidized by chromic acid and by osmium tetraoxide .

Fire Hazard

Flash point data for 1,2:5,6-DIBENZANTHRACENE are not available; however, 1,2:5,6-DIBENZANTHRACENE is probably combustible.

Safety Profile

Confirmed carcinogen with experimental carcinogenic, tumorigenic, and neoplastigenic data. Poison by intravenous route. Human mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes.

Potential Exposure

Dibenz(a,h)anthracene is a chemical substance formed during the incomplete burning of fossil fuel, garbage, or any organic matter and is found in smoke in general; it condenses on dust particles and is distributed into water and soil and on crops. DB(a,h)A is a PAH and is also a component of coal tar pitch, which is used in industry as a binder for electrodes, and creosote is used to preserve wood. PAHs are also found in limited amounts in bituminous materials and asphalt used in industry and for paving.

First aid

Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respira- tion with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with run- ning water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Medical obser- vation is recommended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized para- medic may consider administering a drug or other inhala- tion therapy.


UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required. UN3077 Environmentally hazardous substances, solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.

Purification Methods

The yellow-green colour (due to other pentacyclic impurities) is removed from it by crystallising from *benzene or by selective oxidation with lead tetraacetate in acetic acid [Moriconi et al. J Am Chem Soc 82 3441 1960]. [Beilstein 5 IV 2722.]


Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explo- sions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, and epoxides.

Waste Disposal

See the entry on Coal Tar Pitch Volatiles. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/ mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal.

Heidelberger, Charles, and H. B. Jones. "The Distribution of Radioactivity in the Mouse Following Administration of Dibenzanthracene Labeled in the 9 and 10 Positions with Carbon Fourteen." Cancer1.2(2010):252.

Dibenz[a,h]anthracene Preparation Products And Raw materials

Raw materials

Preparation Products

Dibenz[a,h]anthracene Suppliers

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Dibenz[a,h]anthracene Spectrum

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