Ethanethiol SDS
SECTION 1: Identification of the substance/mixture and of the company/undertaking
Product identifier
- Product name： Ethanethiol
- CAS： 75-08-1
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
Flammable liquids, Category 2
Acute toxicity - Category 4, Inhalation
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
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Pictogram(s)
- Signal word Danger
H225 Highly flammable liquid and vapour
H332 Harmful if inhaled
H410 Very toxic to aquatic life with long lasting effects
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/...] equipment.
P242 Use non-sparking tools.
P243 Take action to prevent static discharges.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P271 Use only outdoors or in a well-ventilated area.
P273 Avoid release to the environment.
P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse affected areas with water [or shower].
P370+P378 In case of fire: Use ... to extinguish.
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317 Get medical help.
P391 Collect spillage.
P403+P235 Store in a well-ventilated place. Keep cool.
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: Ethanethiol
- Common names and synonyms: Ethanethiol
- CAS number: 75-08-1
- EC number: 200-837-3
- Concentration: 100%
SECTION 4: First aid measures
Description of necessary first-aid measures
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Rinse skin with plenty of water or shower. Rinse skin with plenty of water or shower.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Rinse mouth. Rinse mouth. Give one or two glasses of water to drink. Do NOT induce vomiting. Refer for medical attention .
Most important symptoms/effects, acute and delayed
Inhalation of vapor causes muscular weakness, convulsions, respiratory paralysis. High concentrations may cause pulmonary irritation. Liquid irritates eyes and skin. Ingestion causes nausea and irritation of mouth and stomach. (USCG, 1999)
Indication of immediate medical attention and special treatment needed, if necessary
Basic treatment: Establish a patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary . Anticipate seizures and treat if necessary . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with normal saline during transport . Do not use emetics. For ingestion, rinse mouth and administer 5 m1/kg up to 200 ml of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool . Administer activated charcoal . Cover skin burns with dry sterile dressings after decontamination . Sulfur and related compounds
SECTION 5: Firefighting measures
Suitable extinguishing media
If material /is/ on fire or involved in /a/ fire: Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may spread fire. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use foam, dry chemical, or carbon dioxide.
Specific hazards arising from the chemical
Special Hazards of Combustion Products: Irritating fumes of sulfur dioxide are generated. Behavior in Fire: Vapor is heavier than air and may travel long distance to a source of ignition and flash back; containers may explode in a fire; offensive fumes are released when heated. (USCG, 1999)
Special protective actions for fire-fighters
Use powder, foam, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.
SECTION 6: Accidental release measures
Personal precautions, protective equipment and emergency procedures
Evacuate danger area! Personal protection: self-contained breathing apparatus. Do NOT wash away into sewer. Collect leaking and spilled liquid in sealable containers as far as possible.
Environmental precautions
Evacuate danger area! Personal protection: self-contained breathing apparatus. Do NOT wash away into sewer. Collect leaking and spilled liquid in sealable containers as far as possible.
Methods and materials for containment and cleaning up
Odorous gases, such as methylmercaptans, mainly present a cosmetic problem. Thus a variety of methods and procedures, and also patents, are available with methods to absorb odors in scrubbers, by use of catalytic oxidizers or combined scrubber systems with oxidizing agents such as ozone or peroxides.
SECTION 7: Handling and storage
Precautions for safe handling
NO open flames, NO sparks and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting. 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
Fireproof. Separated from strong oxidants and strong acids. Cool.Fireproof. Separated from strong oxidants, strong acids. Cool.
SECTION 8: Exposure controls/personal protection
Control parameters
TLV: 0.5 ppm as TWA.MAK: 1.3 mg/m3, 0.5 ppm; peak limitation category: I(1); skin absorption (H); pregnancy risk group: D
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 or eye protection in combination with breathing protection.
Protective gloves.
Use ventilation, local exhaust or breathing protection.
no data available
SECTION 9: Physical and chemical properties and safety characteristics
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Physical state：
Ethyl mercaptan is a clear colorless low-boiling liquid (boiling point 97°F) with an overpowering, garlic-like/skunk-like odor. Flash point -55°F. Less dense than water and very slightly soluble in water. Vapors are heavier than air. Vapors may irritate nose and throat. May be toxic if swallowed, by inhalation or by contact. Added to natural gas as an odorant. Used as a stabilizer for adhesives.
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Colour：
Colorless liquid [Note: A gas above 95 degrees F].
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Odour：
Leek-like odor
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Melting point/freezing point：
-148°C
-
Boiling point or initial boiling point and boiling range：
35°C(lit.)
-
Flammability：
Class IA Flammable Liquid: Fl.P. below 73°F and BP below 100°F.
-
Lower and upper explosion limit/flammability limit：
Lower flammable limit: 2.8%; upper flammable limit: 18.0%
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Flash point：
-45°C
-
Auto-ignition temperature：
570°F
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Decomposition temperature：
no data available
-
pH：
no data available
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Kinematic viscosity：
0.003155 g/cm sec at 20 deg C
-
Solubility：
0.7 % (NIOSH, 2016)
-
Partition coefficient n-octanol/water：
log Kow = 1.27 (est)
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Vapour pressure：
8.51 psi ( 20 °C)
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Density and/or relative density：
0.839g/mLat 25°C(lit.)
-
Relative vapour density：
2.1 (vs air)
-
Particle characteristics：
no data available
SECTION 10: Stability and reactivity
Reactivity
Decomposes on heating. This produces toxic fumes including hydrogen sulfide (see ICSC 0165) and sulfur oxides. The substance is a weak acid. Reacts with oxidants. This generates fire and explosion hazard. Reacts with strong acids. This produces toxic gases of hydrogen sulfide and sulfur oxides.
Chemical stability
May deteriorate in normal storage and cause hazard.
Possibility of hazardous reactions
Dangerous, when exposed to heat or flame or oxidizers.The vapour is heavier than air and may travel along the ground; distant ignition possible.ETHYL MERCAPTAN reacts violently with calcium hypochlorite, May react vigorously with other oxidizing reagents. On contact with strong acids or when heated to decomposition it emits highly toxic fumes of sulfur oxides [Sax, 9th ed., 1996, p. 1575].
Conditions to avoid
no data available
Incompatible materials
Strong oxidizers [Note: Reacts violently with calcium hypochlorite].
Hazardous decomposition products
When heated to decomposition it emits highly toxic fumes of /sulfur oxides/.
SECTION 11: Toxicological information
Acute toxicity
- Oral: LD50 Rat oral 682 mg/kg
- Inhalation: LC50 Rat inhalation 2770 ppm/4 hr
- 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
The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system. This may result in lowering of consciousness and respiratory depression.
STOT-repeated exposure
no data available
Aspiration hazard
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C.
SECTION 12: Ecological information
Toxicity
- Toxicity to fish: no data available
- Toxicity to daphnia and other aquatic invertebrates: EC50 Daphnia magna (Waterflea, <24 hr old) 90-280 mg/L/48 hr; static, 20 deg C, hardness: 250 mg/L CaCO3, dissolved oxygen: >6.5 mg/L, pH 8.2
- Toxicity to algae: no data available
- Toxicity to microorganisms: no data available
Persistence and degradability
no data available
Bioaccumulative potential
An estimated BCF of 2.7 was calculated for ethyl mercaptan(SRC), using a water solubility of 1.56X10+4 mg/L(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 ethyl mercaptan is estimated as 22(SRC), using a water solubility of 1.56X10+4 mg/L(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that ethyl mercaptan is expected to have very high 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: UN2363 (For reference only, please check.)
IMDG: UN2363 (For reference only, please check.)
IATA: UN2363 (For reference only, please check.)
UN Proper Shipping Name
ADR/RID: ETHYL MERCAPTAN (For reference only, please check.)
IMDG: ETHYL MERCAPTAN (For reference only, please check.)
IATA: ETHYL MERCAPTAN (For reference only, please check.)
Transport hazard class(es)
ADR/RID: 3 (For reference only, please check.)
IMDG: 3 (For reference only, please check.)
IATA: 3 (For reference only, please check.)
Packing group, if applicable
ADR/RID: I (For reference only, please check.)
IMDG: I (For reference only, please check.)
IATA: I (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/