1-methylnaphthalene SDS
SECTION 1: Identification of the substance/mixture and of the company/undertaking
Product identifier
- Product name： 1-methylnaphthalene
- CAS： 90-12-0
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
Aspiration hazard, Category 1
GHS label elements, including precautionary statements
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Pictogram(s)
- Signal word Danger
H302 Harmful if swallowed
H304 May be fatal if swallowed and enters airways
P264 Wash ... thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P301+P317 IF SWALLOWED: Get medical help.
P330 Rinse mouth.
P301+P316 IF SWALLOWED: Get emergency medical help immediately.
P331 Do NOT induce vomiting.
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: 1-methylnaphthalene
- Common names and synonyms: 1-methylnaphthalene
- CAS number: 90-12-0
- EC number: 201-966-8
- 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: Exposure to this compound may cause skin irritation. It may also cause photosensitization. The vapors, fumes or direct contact with the solid may be irritating to the eyes. Inhalation of the vapors may produce airway irritation, headache, nausea, weakness and collapse. Long term overexposure has led to corneal changes. Ingestion may lead to systemic poisoning involving the gastrointestinal tract, kidneys and blood-forming tissue. Individuals with erythrocytic glucose-6-phosphate dehydrogenase deficiency may be particularly susceptible to possible hemolytic effects. Individuals with a history of or pre-existing disease in eyes, mucous membranes, skin, blood-forming tissues or blood, liver or lungs may be at greater risk of adverse health effects when exposed to this material. ACUTE/CHRONIC HAZARDS: This compound can cause skin irritation and photosensitization. It may be harmful if inhaled or absorbed through the skin, and may be highly toxic if swallowed. When heated to decomposition this compound emits acrid smoke and fumes. (NTP, 1992)
Harmful if inhaled. Liquid causes irritation of the eyes and skin and skin photosensitization. Harmful if swallowed. Chronic exposure may cause liver or kidney damage. (USCG, 1999)
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
If material on fire or involved in fire: Use water in flooding quantities as fog. Solid streams of water may be ineffective. Solid streams of water may spread fire. Use foam, dry chemical, or carbon dioxide. Methylnaphthalenes, liquid
Specific hazards arising from the chemical
This chemical is probably combustible. (NTP, 1992)
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
Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT let this chemical enter the environment.
Environmental precautions
Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. 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
If you spill this chemical, FIRST REMOVE ALL SOURCES OF IGNITION. Then, use absorbent paper to pick up all liquid spill material. Your contaminated clothing and absorbent paper should be sealed in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with 60-70% ethanol followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.
SECTION 7: Handling and storage
Precautions for safe handling
NO open flames. Above 82°C use a closed system and ventilation. 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.You should store this material under ambient temperatures.
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 ventilation.
no data available
SECTION 9: Physical and chemical properties and safety characteristics
-
Physical state：
PHYSICAL DESCRIPTION: Bluish-brown oil or a clear yellow liquid. Coal tar or mothball odor. (NTP, 1992)
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Colour：
Colorless liquid or oil
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Odour：
no data available
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Melting point/freezing point：
141°C(lit.)
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Boiling point or initial boiling point and boiling range：
241°C(lit.)
-
Flammability：
Combustible.
-
Lower and upper explosion limit/flammability limit：
no data available
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Flash point：
82°C(lit.)
-
Auto-ignition temperature：
984° F (USCG, 1999)
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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 64° F (NTP, 1992)
-
Partition coefficient n-octanol/water：
log Kow of 3.87
-
Vapour pressure：
23 mm Hg at 77° F ; 31 mm Hg at 122° F; 38 mm Hg at 158° F (NTP, 1992)
-
Density and/or relative density：
1.025
-
Relative vapour density：
4.91 (NTP, 1992) (Relative to Air)
-
Particle characteristics：
no data available
SECTION 10: Stability and reactivity
Reactivity
Decomposes on heating. This produces acrid smoke and irritating fumes.
Chemical stability
This chemical is stable under normal laboratory conditions. Solutions of this chemical in water, DMSO, 95% ethanol or acetone should be stable for 24 hours under normal lab conditions.
Possibility of hazardous reactions
Moderate fire risk.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
This compound is incompatible with strong oxidizers.
Hazardous decomposition products
When heated to decomposition it emits acrid smoke and irritating fumes
SECTION 11: Toxicological information
Acute toxicity
- Oral: LD50 Rat oral 1840 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: LC50; Species: Salmo trutta (Brown Trout) yearling; Conditions: freshwater, static, 10 deg C, pH 7.6-8.0, hardness 210-290 mg/L CaCO3, alkalinity 165-200 mg/L CaCO3, dissolved oxygen >50%; Concentration: 8400 ug/L for 48 hr /formulation
- 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: 10 mmol/cu m for 48 hr (95% confidence interval: 3-40 mmol/cu m) /> or =97% purity/; Effect: Immobilization.
- Toxicity to algae: EC50; Species: Pseudokirchneriella subcapitata (Green Algae); Conditions: static; Concentration: 12000 ug/L for 14 days; Effect: growth, general /formulation
- 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 methylnaphthalenes in 1 and 5.6 days, respectively, for acclimated sewage inoculum; methylnaphthalenes did not degrade with unacclimated sewage(1). No loss of 1-methylnaphthalene was observed for a 5 day BOD test with sewage seed at 20 deg C(2). When marine water was used as an inoculate, 1- and 2-methylnaphthalene at respective concentrations of 0.045 and 0.067 ppm disappeared within 10 days under aerobic conditions at 25 deg C(3). Using the Japanese MITI I procedure, <5% degradation of methylnaphthalene occurred in 28 days; for the MITI II test with a freshwater inoculum, 49 and 72% of the 1- and 2-isomers were lost in 28 days under aerobic conditions at 25 deg C(4). A marine water die-away study with sediment inoculum from Dunstaffnage Bay, Oban, Scotland showed a 92 and 88.5% loss of 1- and 2-methylnaphthalene, respectively, contained in crude oil after 7 days at 20 deg C(5). Methylnaphthalenes, present at 0.5 ppm carbon, was completely removed within 14 days from acclimated fresh-well water grab samples from Tuffenwies and Zurich, Switzerland, with a pH of 8.0, at 10 and 25 deg C and microbial populations of 300-400 cells/mL(6). Grab samples of groundwater aquifer soil that had acclimated to creosote wastes containing methylnaphthalene were able to degrade methylnaphthalenes, present at 0.02 to 0.12 ppm, under aerobic conditions at 25 deg C in less than a week(7). An average loss of 5.6 and 6.5% per week was observed for autoclaved controls(7). Unacclimated material from the same aquifer degraded methylnaphthalenes at an average rate of 3.5% per week; however autoclaved controls lost methylnaphthalenes at an overall rate of about 11% per week(7). Methylnaphthalene, present in light Arabian crude oil, showed little biodegradation in sea water, but when nutrients were added biodegradation increased; with sea water, sediment and nutrients, 100% biodegradation was seen in <10 days(8).
Bioaccumulative potential
After 2, 3, 5 and 6 weeks exposure, the average bioconcentration factors for 1- and 2-methylnaphthalene in the muscle tissue of Coho salmon (Onchorhynchus kisutch) were 30, 85, 160 and 60, respectively(1). After 2 weeks exposure, the average bioconcentration factor for 1- and 2-methylnaphthalene in the muscle tissue, liver and gills of Starry flounder (Platichthys stellatus) was 420, 1800 and 355, respectively(1). BCFs of 360-810 and 360-620 were found using carp (Cyprinus carpio) which were exposed for 60 days at respective concentrations of 1-methylnaphthalene of 1 and 10 ug/L(2). According to a classification scheme(3), BCF values of <30 are low and >1000 are very high. Methylnaphthalenes may be metabolized by some aquatic organisms(SRC).
Mobility in soil
Using a structure estimation method based on molecular connectivity indices(1), the Koc of methylnaphthalenes can be estimated to be 2530(SRC). However, 1-methylnaphthalene has reported Koc values of 2290(2) and 4400(3) and 2-methylnaphthalene has a reported Koc value of 4350(2) and measured Koc value of 8500(3). According to a classification scheme(4), these Koc values suggest that methylnaphthalenes are 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: UN3082 (For reference only, please check.)
IMDG: UN3082 (For reference only, please check.)
IATA: UN3082 (For reference only, please check.)
UN Proper Shipping Name
ADR/RID: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S. (For reference only, please check.)
IMDG: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S. (For reference only, please check.)
IATA: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, 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: No
IMDG: No
IATA: No
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.