Dimethyl terephthalate SDS
SECTION 1: Identification of the substance/mixture and of the company/undertaking
Product identifier
- Product name： Dimethyl terephthalate
- CAS： 120-61-6
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
Not classified.
GHS label elements, including precautionary statements
- Signal word No signal word
none
none
none
none
none
Other hazards which do not result in classification
no data available
SECTION 3: Composition/information on ingredients
Substance
- Chemical name: Dimethyl terephthalate
- Common names and synonyms: Dimethyl terephthalate
- CAS number: 120-61-6
- EC number: 204-411-8
- Concentration: 100%
SECTION 4: First aid measures
Description of necessary first-aid measures
Fresh air, rest.
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.
Most important symptoms/effects, acute and delayed
Molten DMT will cause severe burns of skin on contact. (USCG, 1999)
Indication of immediate medical attention and special treatment needed, if necessary
Call for medical aid. ... Move victim to fresh air. ... Remove contaminated clothing and shoes. Flush affected areas with plenty of water. If swallowed and victim is conscious, have victim drink water, or milk.
SECTION 5: Firefighting measures
Suitable extinguishing media
Extinguish with water, dry chemicals, foam, or carbon dioxide.
Specific hazards arising from the chemical
This chemical is combustible. (NTP, 1992)
Special protective actions for fire-fighters
Use water spray, foam, powder, carbon dioxide.
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. Do NOT let this chemical enter the environment. Sweep spilled substance into covered sealable containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.
Environmental precautions
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered sealable containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.
Methods and materials for containment and cleaning up
Collect and arrange disposal. Keep the chemical in suitable and closed containers for disposal. Remove all sources of ignition. Use spark-proof tools and explosion-proof equipment. Adhered or collected material should be promptly disposed of, in accordance with appropriate laws and regulations.
SECTION 7: Handling and storage
Precautions for safe handling
NO open flames. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust. 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.Dimethyl terephthalate is stored molten in insulated heated tanks, and is perferentially shipped molten in insulated rail tank cars or tank trucks. It is also solidified into briquettes or flakes, and shipped in 1 ton or 25 kg bags.
SECTION 8: Exposure controls/personal protection
Control parameters
| Component | Dimethyl terephthalate | |||
|---|---|---|---|---|
| CAS No. | 120-61-6 | |||
| Limit value - Eight hours | Limit value - Short term | |||
| ppm | mg/m3 | ppm | mg/m3 | |
| Canada - Ontario | ? | 5 | ? | ? |
| Latvia | ? | 0,1 | ? | ? |
| Remarks | ||||
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 spectacles.
Protective gloves.
Use ventilation.
no data available
SECTION 9: Physical and chemical properties and safety characteristics
-
Physical state：
Solid. Flakes.
-
Colour：
Not stated.
-
Odour：
no data available
-
Melting point/freezing point：
141 °C. Atm. press.:1 atm. Remarks:[Datum contained in Table 2 of the cited reference document].;140.65 °C. Atm. press.:1 atm. Remarks:[Datum contained in Table 13 of the cited reference document].
-
Boiling point or initial boiling point and boiling range：
284 °C. Atm. press.:1 atm.
-
Flammability：
Combustible.
-
Lower and upper explosion limit/flammability limit：
no data available
-
Flash point：
151 °C. Atm. press.:101.325 kPa.
-
Auto-ignition temperature：
1058° F (USCG, 1999)
-
Decomposition temperature：
no data available
-
pH：
no data available
-
Kinematic viscosity：
Liquid viscosity = 1.0682X10-3 Pa.s
-
Solubility：
less than 1 mg/mL at 55° F (NTP, 1992)
-
Partition coefficient n-octanol/water：
log Pow = 2.21. Temperature:23 °C. Remarks:Mean of six measurements - duplicate determinations at water:n-octanol ratios of 2:1, 1:1 and 1:2.
-
Vapour pressure：
0 kPa. Temperature:20°C.
-
Density and/or relative density：
1.367 g/cm3. Temperature:20 °C.
-
Relative vapour density：
1.04 (vs air)
-
Particle characteristics：
no data available
SECTION 10: Stability and reactivity
Reactivity
Decomposes on burning. This produces irritating fumes.
Chemical stability
no data available
Possibility of hazardous reactions
Dust explosion possible if in powder or granular form, mixed with air.DIMETHYL TEREPHTHALATE is an ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides. Can generate electrostatic charges. [Handling Chemicals Safely 1980. p. 250]. This compound is sensitive to heat. The molten material reacts with water due to the temperature. This compound is incompatible with strong oxidizers, strong acids and strong bases.
Conditions to avoid
no data available
Incompatible materials
The polymer /produced from DMT/ had been produced for 12 yr by transesterification under nitrogen of the dimethyl ester with ethylene glycol at 250 deg C in presence of titanium butoxide catalyst. After incr the heating capacity of the vessel from a half coil to a full coil, 3 incidents of ignition of vapor after opening the vessel were noted. This is attributed to formation and ignition of mixtures of acetaldehyde or dioxane with ingressing air on the hot vessel surfaces.
Hazardous decomposition products
When heated to decomposition it emits acrid smoke and irritating fumes.
SECTION 11: Toxicological information
Acute toxicity
- Oral: LD50 Rat oral 4390 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
no data available
Reproductive toxicity
no data available
STOT-single exposure
May cause mechanical irritation.
STOT-repeated exposure
no data available
Aspiration hazard
A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C.
SECTION 12: Ecological information
Toxicity
- Toxicity to fish: LC50 - Danio rerio (previous name: Brachydanio rerio) - 13 mg/L - 96 h. Remarks:(converted from results of organic carbon analysis).
- Toxicity to daphnia and other aquatic invertebrates: EC50 - Daphnia magna - > 23.5 mg/L - 48 h.
- Toxicity to algae: ErC50 - Desmodesmus subspicatus (previous name: Scenedesmus subspicatus) - > 29 mg/L - 72 h.
- Toxicity to microorganisms: EC50 - activated sludge of a predominantly domestic sewage - > 1 000 mg/L - 3 h. Remarks:Respiration rate.
Persistence and degradability
AEROBIC: Dimethyl terephthalate, present at 100 mg/L, reached 84% of its theoretical BOD in two weeks using an activated sludge inoculum at 30 mg/L in the Japanese MITI test(1). A 3 day river die-away test using 50, 40, and 5 ppm dimethyl terephthalate resulted in 100% biodegradation in all three tests of river water, and 27, 38, and 49% biodegradation, respectively, in the three tests of sea water(2). Dimethyl terephthalate, at a concentration of 0.5%, degraded completely in 15 days at 30 deg C in soil with a pH of 8.2 and 60% moisture content(3). The microbe Rhodococcus ruber 2B, isolated from sewage treatment facilities, was shown to accelerate the rate of degradation; terephthalate monoesters and terephthalic acid were identified as metabolites(3).
Bioaccumulative potential
An estimated BCF of 11 was calculated in fish for dimethyl terephthlate(SRC), using a log Kow of 2.25(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC).
Mobility in soil
The Koc of dimethyl terephthalate is estimated as 400(SRC), using a log Kow of 2.25(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that dimethyl terephthalate is expected to have moderate 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: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
UN Proper Shipping Name
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
Transport hazard class(es)
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
Packing group, if applicable
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (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
May be transported in molten form, UN number 3256.