Dibenz[a,h]anthracene SDS
SECTION 1: Identification of the substance/mixture and of the company/undertaking
Product identifier
- Product name： Dibenz[a,h]anthracene
- CAS： 53-70-3
Relevant identified uses of the substance or mixture and uses advised against
- Relevant identified uses： For R&D use only. Not for medicinal, household or other use.
- Uses advised against： none
Company Identification
- Company：Chemicalbook.in
- Address：5 vasavi Layout Basaveswara Nilayam Pragathi Nagar Hyderabad, India -500090
- Telephone：+91 9550333722
SECTION 2: Hazards identification
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
GHS label elements, including precautionary statements
-
Pictogram(s)
- Signal word Danger
H350 May cause cancer
H410 Very toxic to aquatic life with long lasting effects
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.
Other hazards which do not result in classification
no data available
SECTION 3: Composition/information on ingredients
Substance
- Chemical name: Dibenz[a,h]anthracene
- Common names and synonyms: Dibenz[a,h]anthracene
- CAS number: 53-70-3
- EC number: 200-181-8
- Concentration: 100%
SECTION 4: First aid measures
Description of necessary first-aid measures
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.
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. (NTP, 1992)
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
SECTION 5: Firefighting measures
Suitable extinguishing media
Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical. or carbon dioxide.[Sigma-Aldrich; Safety Data Sheet for Dibenz
Specific hazards arising from the chemical
Flash point data for this chemical are not available; however, it is probably combustible. (NTP, 1992)
Special protective actions for fire-fighters
Use water spray, powder.
SECTION 6: Accidental release measures
Personal precautions, protective equipment and emergency procedures
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.
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.
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
SECTION 7: Handling and storage
Precautions for safe handling
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.
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
SECTION 8: Exposure controls/personal protection
Control parameters
MAK: carcinogen category: 2; germ cell mutagen group: 3A; skin absorption (H)
no data available
Appropriate engineering controls
Ensure adequate ventilation. Handle in accordance with good industrial hygiene and safety practice. Set up emergency exits and the risk-elimination area.
Individual protection measures, such as personal protective equipment (PPE)
Wear face shield or eye protection in combination with breathing protection.
Protective gloves. Protective clothing.
Use local exhaust or breathing protection.
no data available
SECTION 9: Physical and chemical properties and safety characteristics
-
Physical state：
PHYSICAL DESCRIPTION: White crystals or pale yellow solid. Sublimes. (NTP, 1992)
-
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 66° F (NTP, 1992)
-
Partition coefficient n-octanol/water：
log Kow = 6.50
-
Vapour pressure：
1e-10 mm Hg at 68° F (estimated) (NTP, 1992)
-
Density and/or relative density：
1.232g/cm3
-
Relative vapour density：
no data available
-
Particle characteristics：
no data available
SECTION 10: Stability and reactivity
Reactivity
NIOSH considers coal tar pitch volatiles to be potential occupational carcinogens. Coal tar pitch volatiles
Chemical stability
Stable under recommended storage conditions.[Sigma-Aldrich; Safety Data Sheet for Dibenz
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 (NTP, 1992).
Conditions to avoid
no data available
Incompatible materials
Incompatible materials: Strong oxidizing agents.[Sigma-Aldrich; Safety Data Sheet for Dibenz
Hazardous decomposition products
Hazardous decomposition products formed under fire conditions - Carbon oxides.[Sigma-Aldrich; Safety Data Sheet for Dibenz
SECTION 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
See Notes.
STOT-repeated exposure
The substance may have effects on the skin. This may result in photosensitization. This substance is probably carcinogenic to humans.
Aspiration hazard
A nuisance-causing concentration of airborne particles can be reached quickly when dispersed.
SECTION 12: Ecological information
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 deg 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
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).
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).
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).
Other adverse effects
no data available
SECTION 13: Disposal considerations
Disposal methods
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.
SECTION 14: Transport information
UN Number
ADR/RID: UN3077 (For reference only, please check.)
IMDG: UN3077 (For reference only, please check.)
IATA: UN3077 (For reference only, please check.)
UN Proper Shipping Name
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.)
Transport hazard class(es)
ADR/RID: 9 (For reference only, please check.)
IMDG: 9 (For reference only, please check.)
IATA: 9 (For reference only, please check.)
Packing group, if applicable
ADR/RID: III (For reference only, please check.)
IMDG: III (For reference only, please check.)
IATA: III (For reference only, please check.)
Environmental hazards
ADR/RID: Yes
IMDG: Yes
IATA: Yes
Special precautions for user
no data available
Transport in bulk according to IMO instruments
no data available
SECTION 15: Regulatory information
Safety, health and environmental regulations specific for the product in question
SECTION 16: Other information
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/
Other Information
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.