1.Identification
1.1 GHS Product identifier
| Product name | dibenz[a,h]anthracene |
|---|
1.2 Other means of identification
| Product number | - |
|---|---|
| Other names | 1,2:5,6-DIBENZANTHRACENE |
1.3 Recommended use of the chemical and restrictions on use
| Identified uses | For industry use only. |
|---|---|
| Uses advised against | no data available |
1.4 Supplier's details
1.5 Emergency phone number
| Emergency phone number | - |
|---|---|
| Service hours | Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours). |
2.Hazard identification
2.1 Classification of the substance or mixture
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
2.2 GHS label elements, including precautionary statements
| Pictogram(s) |   |
|---|---|
| Signal word | Danger |
| Hazard statement(s) | H350 May cause cancer H410 Very toxic to aquatic life with long lasting effects |
| Precautionary statement(s) | |
| Prevention | P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. P280 Wear protective gloves/protective clothing/eye protection/face protection. P273 Avoid release to the environment. |
| Response | P308+P313 IF exposed or concerned: Get medical advice/ attention. P391 Collect spillage. |
| Storage | P405 Store locked up. |
| Disposal | P501 Dispose of contents/container to ... |
2.3 Other hazards which do not result in classification
none
3.Composition/information on ingredients
3.1 Substances
| Chemical name | Common names and synonyms | CAS number | EC number | Concentration |
|---|---|---|---|---|
| dibenz[a,h]anthracene | dibenz[a,h]anthracene | 53-70-3 | none | 100% |
4.First-aid measures
4.1 Description of necessary first-aid measures
General advice
Consult a physician. Show this safety data sheet to the doctor in attendance.
If inhaled
Fresh air, rest. Seek medical attention if you feel unwell.
In case of skin contact
Remove contaminated clothes. Rinse and then wash skin with water and soap.
In case of eye contact
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
If swallowed
Rinse mouth. Seek medical attention if you feel unwell.
4.2 Most important symptoms/effects, acute and delayed
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.
4.3 Indication of immediate medical attention and special treatment needed, if necessary
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/
5.Fire-fighting measures
5.1 Extinguishing media
Suitable extinguishing media
Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical. or carbon dioxide.[Sigma-Aldrich; Safety Data Sheet for Dibenz
5.2 Specific hazards arising from the chemical
Flash point data for this chemical are not available; however, it is probably combustible.
5.3 Special protective actions for fire-fighters
Wear self-contained breathing apparatus for firefighting if necessary.
6.Accidental release measures
6.1 Personal precautions, protective equipment and emergency procedures
Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8.
6.2 Environmental precautions
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.
6.3 Methods and materials for containment and cleaning up
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
7.Handling and storage
7.1 Precautions for safe handling
Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2.
7.2 Conditions for safe storage, including any incompatibilities
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
8.Exposure controls/personal protection
8.1 Control parameters
Occupational Exposure limit values
Recommended Exposure Limit: 10 Hr Time-Weighted Avg: 0.1 mg/cu m (cyclohexane-extractable fraction). /Coal tar pitch volatiles/
NIOSH considers coal tar pitch volatiles to be potential occupational carcinogens. NIOSH usually recommends that occupational exposures to carcinogens be limited to the lowest feasible concentration. /Coal tar pitch volatiles/
Biological limit values
no data available
8.2 Appropriate engineering controls
Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.
8.3 Individual protection measures, such as personal protective equipment (PPE)
Eye/face protection
Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin protection
Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.
Respiratory protection
Wear dust mask when handling large quantities.
Thermal hazards
no data available
9.Physical and chemical properties
| Physical state | white to light yellow crystalline solid |
|---|---|
| Colour | Colorless plates or leaflets /recrystallized/ from acetic acid |
| Odour | no data available |
| Melting point/ freezing point | 266°C(lit.) |
| Boiling point or initial boiling point and boiling range | 524°C(lit.) |
| Flammability | Combustible. |
| Lower and upper explosion limit / flammability limit | no data available |
| Flash point | 78°C(lit.) |
| Auto-ignition temperature | no data available |
| Decomposition temperature | no data available |
| pH | no data available |
| Kinematic viscosity | no data available |
| Solubility | less than 1 mg/mL at 18.89°C |
| Partition coefficient n-octanol/water (log value) | log Kow = 6.50 |
| Vapour pressure | 1e-10 mm Hg at 20°C (estimated) |
| Density and/or relative density | 1.232g/cm3 |
| Relative vapour density | no data available |
| Particle characteristics | no data available |
10.Stability and reactivity
10.1 Reactivity
no data available
10.2 Chemical stability
Stable under recommended storage conditions.[Sigma-Aldrich; Safety Data Sheet for Dibenz
10.3 Possibility of hazardous reactions
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 .
10.4 Conditions to avoid
no data available
10.5 Incompatible materials
Incompatible materials: Strong oxidizing agents.[Sigma-Aldrich; Safety Data Sheet for Dibenz
10.6 Hazardous decomposition products
Hazardous decomposition products formed under fire conditions - Carbon oxides.[Sigma-Aldrich; Safety Data Sheet for Dibenz
11.Toxicological information
Acute toxicity
- Oral: no data available
- Inhalation: no data available
- Dermal: no data available
Skin corrosion/irritation
no data available
Serious eye damage/irritation
no data available
Respiratory or skin sensitization
no data available
Germ cell mutagenicity
no data available
Carcinogenicity
No data are available in humans. Sufficient evidence of carcinogenicity in animals. OVERALL EVALUATION: Group 2A: The agent is probably carcinogenic to humans.
Reproductive toxicity
no data available
STOT-single exposure
no data available
STOT-repeated exposure
no data available
Aspiration hazard
no data available
12.Ecological information
12.1 Toxicity
- Toxicity to fish: no data available
- Toxicity to daphnia and other aquatic invertebrates: EC50; Species: Daphnia magna (Water flea) about 4 day old juvenile; Conditions: freshwater, static, 20°C, pH 8.0, alkalinity 250 mg/L CaCO3; Concentration: 496 ug/L for 24 hr (95% confidence interval: 360-778 ug/L); Effect: intoxication, immobilization /97% purity
- Toxicity to algae: no data available
- Toxicity to microorganisms: no data available
12.2 Persistence and degradability
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).
12.3 Bioaccumulative potential
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).
12.4 Mobility in soil
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).
12.5 Other adverse effects
no data available
13.Disposal considerations
13.1 Disposal methods
Product
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.
Contaminated packaging
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.
14.Transport information
14.1 UN Number
| ADR/RID: UN3077 | IMDG: UN3077 | IATA: UN3077 |
14.2 UN Proper Shipping Name
| ADR/RID: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S. |
| IMDG: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S. |
| IATA: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S. |
14.3 Transport hazard class(es)
| ADR/RID: 9 | IMDG: 9 | IATA: 9 |
14.4 Packing group, if applicable
| ADR/RID: III | IMDG: III | IATA: III |
14.5 Environmental hazards
| ADR/RID: yes | IMDG: yes | IATA: yes |
14.6 Special precautions for user
no data available
14.7 Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
no data available
15.Regulatory information
15.1 Safety, health and environmental regulations specific for the product in question
| Chemical name | Common names and synonyms | CAS number | EC number |
|---|---|---|---|
| dibenz[a,h]anthracene | dibenz[a,h]anthracene | 53-70-3 | none |
| European Inventory of Existing Commercial Chemical Substances (EINECS) | Listed. | ||
| EC Inventory | Listed. | ||
| United States Toxic Substances Control Act (TSCA) Inventory | Listed. | ||
| China Catalog of Hazardous chemicals 2015 | Not Listed. | ||
| New Zealand Inventory of Chemicals (NZIoC) | Listed. | ||
| Philippines Inventory of Chemicals and Chemical Substances (PICCS) | Not Listed. | ||
| Vietnam National Chemical Inventory | Not Listed. | ||
| Chinese Chemical Inventory of Existing Chemical Substances (China IECSC) | Listed. | ||
16.Other information
Information on revision
| Creation Date | Aug 12, 2017 |
|---|---|
| Revision Date | Aug 12, 2017 |
Abbreviations and acronyms
- CAS: Chemical Abstracts Service
- ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
- RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
- IMDG: International Maritime Dangerous Goods
- IATA: International Air Transportation Association
- TWA: Time Weighted Average
- STEL: Short term exposure limit
- LC50: Lethal Concentration 50%
- LD50: Lethal Dose 50%
- EC50: Effective Concentration 50%
References
- IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home
- HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
- IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/
- eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en
- CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
- ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
- ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.gov/hazmat/library/erg
- Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
- ECHA - European Chemicals Agency, website: https://echa.europa.eu/
