Dibenz[a,h]anthracene

Carcinogenicity, Category 1B

Hazardous to the aquatic environment, short-term (Acute) - Category Acute 1

Hazardous to the aquatic environment, long-term (Chronic) - Category Chronic 1

H341 Suspected of causing genetic defects

H350 May cause cancer

H373 May cause damage to organs through prolonged or repeated exposure

H410 Very toxic to aquatic life with long lasting effects

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..…

P203 Obtain, read and follow all safety instructions before use.

P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...

P273 Avoid release to the environment.

P318 IF exposed or concerned, get medical advice.

P391 Collect spillage.

P405 Store locked up.

P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

no data available

Fresh air, rest. Seek medical attention if you feel unwell.

Remove contaminated clothes. Rinse and then wash skin with water and soap.

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

Rinse mouth. Seek medical attention if you feel unwell.

SYMPTOMS: Symptoms of exposure to this compound may include irritation. ACUTE/CHRONIC HAZARDS: This compound is harmful if swallowed or inhaled. It may cause irritation. When heated to decomposition it emits acrid smoke, irritating fumes and toxic fumes of carbon monoxide and carbon dioxide. (NTP, 1992)

Immediate First Aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR if necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. Aromatic hydrocarbons and related compounds

Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical. or carbon dioxide.[Sigma-Aldrich; Safety Data Sheet for Dibenz

Flash point data for this chemical are not available; however, it is probably combustible. (NTP, 1992)

Use water spray, powder.

Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into sealable containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT let this chemical enter the environment.

Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into sealable containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT let this chemical enter the environment.

ACCIDENTAL RELEASE MEASURES: Personal precautions, protective equipment and emergency procedures: Use personal protective equipment. Avoid dust formation. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. Environmental precautions: Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided. Methods and materials for containment and cleaning up: Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed containers for disposal.[Sigma-Aldrich; Safety Data Sheet for Dibenz

NO open flames. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Well closed. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.Keep container tightly closed in a dry and well-ventilated place. Storage class (TRGS 510): Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects.[Sigma-Aldrich; Safety Data Sheet for Dibenz

MAK: carcinogen category: 2; germ cell mutagen group: 3A; skin absorption (H)

no data available

Ensure adequate ventilation. Handle in accordance with good industrial hygiene and safety practice. Set up emergency exits and the risk-elimination area.

Wear face shield or eye protection in combination with breathing protection.

Protective gloves. Protective clothing.

Use local exhaust or breathing protection.

no data available

NIOSH considers coal tar pitch volatiles to be potential occupational carcinogens. Coal tar pitch volatiles

Stable under recommended storage conditions.[Sigma-Aldrich; Safety Data Sheet for Dibenz

This chemical is a combustible solid.DIBENZ[A,H]ANTHRACENE is incompatible with strong oxidizing agents. Is oxidized by chromic acid and by osmium tetraoxide (NTP, 1992).

no data available

Incompatible materials: Strong oxidizing agents.[Sigma-Aldrich; Safety Data Sheet for Dibenz

Hazardous decomposition products formed under fire conditions - Carbon oxides.[Sigma-Aldrich; Safety Data Sheet for Dibenz

no data available

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No data are available in humans. Sufficient evidence of carcinogenicity in animals. OVERALL EVALUATION: Group 2A: The agent is probably carcinogenic to humans.

no data available

See Notes.

The substance may have effects on the skin. This may result in photosensitization. This substance is probably carcinogenic to humans.

A nuisance-causing concentration of airborne particles can be reached quickly when dispersed.

AEROBIC: In Warburg tests, dibenz(a,h)anthracene reached 96% of its theoretical BOD in 144 hrs using activated sludge from municipal wastewater plants(1). The percent microbial mineralization of dibenz(a,h)anthracene by 6 fresh and 6 ripe composted municipal waste in 10 weeks as measured by (14)CO2 formation was 0.1-1.4% and 0.8-20.8%, respectively; the average was 0.4% and 12.6%, respectively(2). Half-lives of 18 and 21 days were reported for the degradation (method of degradation unknown) of dibenz(a,h)anthracene in soil systems(3). 20% biodegradation of dibenz(a,h)anthracene was observed in a town gas soil-water slurry reactor using a polynuclear aromatic hydrocarbon-acclimated mixed culture over a period of 5 weeks incubation(4). 30% biodegradation of dibenz(a,h)anthracene was observed after 2 weeks incubation using a mixed aerobic culture in liquid slurry intentionally contaminated with polynuclear aromatic hydrocarbons extracted from a town gas site(4). After 30 days of aeration and mixing in a batch slurry bioremediation process, inoculated with a mixed culture of hydrocarbon-degrading bacteria, the slurry-phase dibenz(a,h)anthracene concentration was reduced from 1,300 ug/kg on day 30 to 1,180 ug/kg on day 60(5). An initial increase in the slurry-phase dibenz(a,h)anthracene concentration observed during the first 30 days of the experiment was attributed to a solubilizing effect resulting from bacterial inoculation of the pollutant soil wash concentrates(5). The percent biodegradation of dibenz(a,h)anthracene by microbes in settled domestic wastewater in original culture, 1st, 2nd and 3rd subculture was (concentration): 82% (1.10 ppm), 82% (1.18 ppm), 82% (1.14 ppm) and 75% (1.22 ppm), respectively. 7 days were allowed between each measurement and subculture(6). Soil contaminated with dibenz(a,h)anthracene from the former gasworks site showed little biodegradation in a pilot scale bioslurry when normalized with anthracene biodegradation. The fraction of dibenz(a,h)anthracene left in soil after degradation relative to anthracene at 3, 7, 24, 29 days was 102, 95, 104, 93%, respectively(7). Additional field bioremediation efforts were also unsuccessful after one year of treatment followed by supercritical fluid extraction (SFE)(7). Dibenz(a,h)anthracene concentration of 12 mg/kg remained the same after 1 year of bioremediateion in the field. SFE was not able to remove dibenz(a,h)anthracene from the fast fraction and only reduced the concentration to 10 mg/kg by in the fast/moderate fraction(8).

An estimated BCF of 9000 was calculated in fish for dibenz(a,h)anthracene(SRC), using a log Kow of 6.50(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is very high(SRC), provided the compound is not metabolized by the organism(SRC). However, it may not bioconcentrate in aquatic organisms which contain microsomal oxidase, such as fish, as this enzyme enables the rapid metabolism of certain polycyclic aromatic hydrocarbons(4). A BCF of 10 was measured in golden ide fish (Leuciscus idus melanotus) that were exposed to dibenz(a,h)anthracene (0.05 mg/L) over a 3-day period(5). A measured fish biotransformation half-life of 1.63 days has been reported for dibenz(a,h)anthracene(6).

In sediments, the Koc of dibenz(a,h)anthracene ranged (11 values) from 8.1X10+5 to 3.1X10+6; in soil the Koc ranges (3 values) are from 5.7X10+5 to 3.0X10+6(1). The average Koc in sediments and soil is 2.0X10+6(1). The Koc of dibenz(a,h)anthracene in 16 historically contaminated sediments ranged from 1.1X10+6 to 4.8X10+7 with a median of 6.6X10+6(2). According to a classification scheme(3), these Koc values suggest that dibenz(a,h)anthracene is expected to be immobile in soil(SRC). An accumulation factor (concentration of chemical in sludge, ug/g/final concentration of chemical in water, ug/g) of 42,800 was observed for dibenz(a,h)anthracene after 5 days in activated sludge(4).

no data available

The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.

Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.

ADR/RID: UN3077 (For reference only, please check.)

IMDG: UN3077 (For reference only, please check.)

IATA: UN3077 (For reference only, please check.)

ADR/RID: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S. (For reference only, please check.)

IMDG: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S. (For reference only, please check.)

IATA: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S. (For reference only, please check.)

ADR/RID: 9 (For reference only, please check.)

IMDG: 9 (For reference only, please check.)

IATA: 9 (For reference only, please check.)

ADR/RID: III (For reference only, please check.)

IMDG: III (For reference only, please check.)

IATA: III (For reference only, please check.)

ADR/RID: Yes

IMDG: Yes

IATA: Yes

no data available

no data available

Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.Do NOT take working clothes home.