2-methylnaphthalene SDS
SECTION 1: Identification of the substance/mixture and of the company/undertaking
Product identifier
- Product name： 2-methylnaphthalene
- CAS： 91-57-6
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
Acute toxicity - Category 4, Oral
Hazardous to the aquatic environment, long-term (Chronic) - Category Chronic 2
GHS label elements, including precautionary statements
-
Pictogram(s)
- Signal word Warning
H302 Harmful if swallowed
H411 Toxic to aquatic life with long lasting effects
P264 Wash ... thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P273 Avoid release to the environment.
P301+P317 IF SWALLOWED: Get medical help.
P330 Rinse mouth.
P391 Collect spillage.
none
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: 2-methylnaphthalene
- Common names and synonyms: 2-methylnaphthalene
- CAS number: 91-57-6
- EC number: 202-078-3
- Concentration: 100%
SECTION 4: First aid measures
Description of necessary first-aid measures
Fresh air, rest.
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. Give a slurry of activated charcoal in water to drink. Rest. Refer for medical attention .
Most important symptoms/effects, acute and delayed
SYMPTOMS: Symptoms of exposure to this compound may include irritation of the skin, eyes, mucous membranes and upper respiratory tract. It may also cause headaches, nausea, vomiting, diarrhea, anemia, jaundice, euphoria, dermatitis, visual disturbances, convulsions and comatose. ACUTE/CHRONIC HAZARDS: This compound may be harmful by inhalation, ingestion or skin absorption. It is an irritant of the skin, eyes, mucous membranes and upper respiratory tract. 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
Emergency and supportive measures: 1. Maintain an open air way and assist ventilation if necessary. 2. Treat coma and seizures if they occur. 3. Treat hemolysis and resulting hemoglobinuria if they occur by intravenous hydration and urinary alkalinization. Naphthalene
SECTION 5: Firefighting measures
Suitable extinguishing media
Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
Specific hazards arising from the chemical
This chemical is combustible. (NTP, 1992)
Special protective actions for fire-fighters
Use powder, foam, carbon dioxide.
SECTION 6: Accidental release measures
Personal precautions, protective equipment and emergency procedures
Sweep spilled substance into covered 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
Sweep spilled substance into covered 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 vapours, 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.
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
Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.Conditions for safe storage, including any incompatibilities: Keep container tightly closed in a dry and well-ventilated place.
SECTION 8: Exposure controls/personal protection
Control parameters
TLV: 0.5 ppm as TWA; (skin); A4 (not classifiable as a human carcinogen)
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 safety goggles.
Protective gloves.
Use local exhaust.
no data available
SECTION 9: Physical and chemical properties and safety characteristics
-
Physical state：
PHYSICAL DESCRIPTION: White crystalline solid. (NTP, 1992)
-
Colour：
Monoclinic crystals from alcohol
-
Odour：
no data available
-
Melting point/freezing point：
202°C(lit.)
-
Boiling point or initial boiling point and boiling range：
241°C(lit.)
-
Flammability：
Combustible.
-
Lower and upper explosion limit/flammability limit：
no data available
-
Flash point：
102°C(lit.)
-
Auto-ignition temperature：
no data available
-
Decomposition temperature：
no data available
-
pH：
no data available
-
Kinematic viscosity：
no data available
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Solubility：
less than 1 mg/mL at 70° F (NTP, 1992)
-
Partition coefficient n-octanol/water：
log Kow = 3.86
-
Vapour pressure：
0.055 mm Hg at 25 deg C
-
Density and/or relative density：
1.01
-
Relative vapour density：
no data available
-
Particle characteristics：
no data available
SECTION 10: Stability and reactivity
Reactivity
Decomposes on heating. This produces acrid smoke and irritating fumes.
Chemical stability
no data available
Possibility of hazardous reactions
Combustible.2-METHYLNAPHTHALENE is incompatible with strong oxidizing agents. It is also incompatible with peroxides and oxygen. (NTP, 1992)
Conditions to avoid
no data available
Incompatible materials
It... is incompatible with strong oxidizing agents.
Hazardous decomposition products
Decomposes on heating. This produces acrid smoke and irritating fumes.
SECTION 11: Toxicological information
Acute toxicity
- Oral: LD50 Rat oral 1630 mg/kg
- 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
A4; Not classifiable as a human carcinogen.
Reproductive toxicity
no data available
STOT-single exposure
The substance is irritating to the eyes.
STOT-repeated exposure
Repeated or prolonged inhalation may cause effects on the lungs.
Aspiration hazard
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C.
SECTION 12: Ecological information
Toxicity
- Toxicity to fish: no data available
- Toxicity to daphnia and other aquatic invertebrates: EC50; Species: Daphnia magna (Water flea) age 4-6 days, length 1.5 mm; Conditions: freshwater, static, 23 deg C, pH 6-7, dissolved oxygen 5-9 mg/L; Concentration: 13 mmol/cu m (95% confidence interval: 5-35 mmol/cu m); Effect: intoxication, immobilization /> or = 97% purity
- Toxicity to algae: no data available
- Toxicity to microorganisms: no data available
Persistence and degradability
AEROBIC: Aerobic aqueous screening test data showed a 84 and 95% loss of 0.1 ppm 2-methylnaphthalene in 1 and 5.6 days, respectively, for acclimated sewage inoculum and did not degrade with unacclimated sewage(1). When marine water was used to inoculate, 2-methylnaphthalene at a concentration of 0.067 ppm disappeared within 10 days under aerobic conditions at 25 deg C(2). Using the Japanese MITI I procedure, <5% degradation of 2-methylnaphthalene occurred in 28 days; however, for the MITI II test with a freshwater inoculum, 72% was lost in 28 days under aerobic conditions at 25 deg C(3). 2-Naphthoic acid was identified as a microbial co-oxidation product of 2-methylnaphthalene by mixed cultures of Norcardia sp. isolated from soil(4). 2-Methylnaphthalene showed a lag-period of two weeks, and then rapid degraded to 17% residual in the two weeks following the lag period and was not detected after 25 weeks, in a study using microcosms filled with soil (1.1% organic carbon, 6.5% kaolin) material and a coal derived wood-preservative(5). 2-Methylnaphthalene was aerobically biodegraded 100% in 4 different northern soils (arctic diesel fuel contaminated, PCB and associated oil contaminated, creosote-PAH contaminated, uncontaminated) incubated at 7 and 20 deg C for 90 days(6).
Bioaccumulative potential
After 2, 3 and 5 weeks exposure, the BCF of 2-methylnaphthalene in the muscle tissue of Coho salmon (Onchorhynchus kisutch) was 30, 100 and 190, respectively. The BCF dropped to 70 within one week following 6 weeks exposure(1). After 2 weeks exposure, the average BCF of 2-methylnaphthalene in the muscle tissue of Starry flounder (Platichthys stellatus) was 895(1). BCF values in sheepshead minnows (Cyprinidon variegatus) exposed for 36 days to 2.46 and 23.63 ug/L of 2-methylnaphthalene were 2852 and 2921, respectively(2). Exposure of fingerling rainbow trout to 14C-(8)-2-methylnaphthalene (2573 dpm/ug) at 0.02 mg/L for four weeks in a continuous- flow delivery system resulted in maximum tissue levels from 40 to 300 times the water concentration; maximum bile 14C levels were 23,500 times the water concentration(3). A BCF of 407 has been reported for bluegill sunfish after exposure to 14C-(8)-2-methylnaphthalene at 0.013 ug/L for 26 days in a continuous-flow delivery system(4). According to a classification scheme(5), these BCF values suggest that 2-methylnaphthalene bioconcentration in aquatic organisms is low to very high(SRC), provided the compound is not metabolized by the organism(SRC). A BCF of 8.1 was reported for 2-methylnaphthalene in clams after 24 hours of exposure to a water concentration of 2-methylnaphthalene of 480 ug/L(6). The biota-sediment accumulation factor for 2-methylnaphthalene determined using oligochaete worm (Lumbriculus variegatus) was 4.2 and 0.11 in Lake Erie sediment from Vermilion, OH and Dunkirk, NY, respectively(7).
Mobility in soil
A log Koc value of 3.67 was reported in soil(1). An average sediment- or soil-water partition coefficient (log Kp) for 2-methylnaphthalene of 2.00 was determined from 17 measurements(2). The log Koc values for 2-methylnaphthalene in 75 sediment samples was 3.00-5.96(3). Measured Koc values have been reported as 4,400(4) and 8,500(5) for 2-methylnaphthalene. According to a classification scheme(6), these Koc values suggest that 2-methylnaphthalene is expected to have slight to no mobility in soil.
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.