CAS 25550-14-5 1-Ethyl-2-Methylbenzene (HCID 11903)

Overview

Ethyl toluene appears as a colorless liquid with an aromatic hydrocarbon odor. Insoluble in water and less dense than water. Vapors heavier than air. Flash point 105 °F. Boiling point is 324 °F. Contact may irritate the skin, eyes, and mucous membranes. Used as a solvent.

Names & identifiers

Preferred name: 1-Ethyl-2-Methylbenzene
IUPAC: 1-ethyl-2-methylbenzene
English name: 2-Ethyltoluene
Molecular formula: C9H12
Molecular weight: 120.19158

Names & synonyms

1-Ethyl-2-methylbenzene2-Ethyltoluene611-14-3O-ETHYLTOLUENEo-Methylethylbenzene1-Methyl-2-ethylbenzeneToluene, o-ethyl-ortho-EthyltolueneBenzene, 1-ethyl-2-methyl-1,2-methylethylbenzeneo-Ethyl methylbenzeneo-Ethyl methyl benzene

Show more names

Ethyltoluene2-ethyl tolueneEthyltoluene, o-2-Methyl-1-ethylbenzeneNSC 405731DTXSID2050403EINECS 210-255-1BRN 1851237

Database identifiers

CAS: 25550-14-5、611-14-3
PubChem CID: 11903
DTXSID: DTXSID2050403
ChEMBL: CHEMBL364233
ChEBI: CHEBI:34276
UNII: DBX00873SV
EC Number: 210-255-1、247-093-6
Nikkaji: J43.559G

Properties

Computed structural properties

XLogP: 3.5
Topological polar surface area: 0 Å²
Hydrogen bond donors: 0
Hydrogen bond acceptors: 0
Rotatable bonds: 1
Heavy atoms: 9
Formal charge: 0
Complexity: 76.1

Experimental & physicochemical properties

Chemical ClassesVolatile Organic Compound (VOC)

SolventsSolvents -> Aromatic Solvents

SpringerMaterials PropertiesBoiling point

LogP3.86

Density · 2 items

0.8807 at 68 °F (USCG, 1999) - Less dense than water; will float

0.88 @25 °C

Flash Point103 °F (USCG, 1999)

Physicochemical properties

Symbol(GHS): 2 · GHS02,GHS08
Signal word: Danger
Hazard statements: 226 · H226-H304
Precautionary statements: 210 · P210-P233-P240-P241-P301+P310-P331

Safety & regulation

GHS classification

GHS Classification · 6 items

This chemical does not meet GHS hazard criteria for 0.5% (1 of 208) of reports.

Danger

H226 (99.5%): Flammable liquid and vapor [Warning Flammable liquids]

P203, P210, P233, P240, P241, P242, P243, P264+P265, P273, P280, P301+P316, P303+P361+P353, P305+P351+P338, P318, P331, P337+P317, P370+P378, P391, P403+P235, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 208 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

This chemical does not meet GHS hazard criteria for 22.4% (11 of 49) of reports.

Hazard information

Regulatory Information · 3 items

Chemical: Benzene, 1-ethyl-2-methyl-

Benzene, 1-ethyl-2-methyl- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Benzene, 1-ethyl-2-methyl- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

2-Ethyltoluene: Does not have an individual approval but may be used under an appropriate group standard

DOT LabelFlammable Liquid

Fire HazardsBehavior in Fire: Vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back. (USCG, 1999)

Health Hazards · 1 item

Vapors irritate eyes and upper respiratory tract; cause dizziness, headache, anesthesia, respiratory arrest. Liquid irritates eyes and causes drying of skin. If aspirated, causes coughing, gagging, distress, amd rapidly developing pulmonary edema. If ingested causes vomiting, griping, diarrhea, depressed respiration. (USCG, 1999)

Hazards Summary · 1 item

An eye and upper respiratory tract irritant; May cause smarting of the skin if left on clothing; Inhalation may cause dizziness, anesthesia, and respiratory arrest; An aspiration hazard; Chronic effects of ingestion may include kidney and liver injury; [CHRIS] May cause irritation; Harmful by ingestion (may cause lung damage by aspiration); [Alfa Aesar MSDS]

Reactive GroupHydrocarbons, Aromatic

Safety & protection

Fire FightingExcerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:

First AidINHALATION: Remove to fresh air, give artificial respiration and oxygen if needed; call a doctor.

Nonfire Spill ResponseExcerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:

Isolation and EvacuationExcerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:

Protective Action Criteria (PAC) · 3 items

36 [mg/m3]

400 [mg/m3]

2400 [mg/m3]

Personal Protective Equipment (PPE)Air-supplied mask; goggles or face shield; plastic gloves. (USCG, 1999)

Toxicology

Adverse EffectsNeurotoxin - Acute solvent syndrome

Toxicity DataLC50 (mouse) = 54,000 mg/m3/4hr

USGS Health-Based Screening Levels for Evaluating Water-Quality · 3 items

1-Ethyl-2-Methylbenzene

Volatile Organic Compound (VOC)

Smith, C.D. and Nowell, L.H., 2024. Health-Based Screening Levels for evaluating water-quality data (3rd ed.). DOI:10.5066/F71C1TWP

Safety data

Signal word: Danger
Symbol(GHS): GHS02,GHS08
Hazard statements: H226-H304
Precautionary statements: P210-P233-P240-P241-P301+P310-P331

Chemistry & industry

Pharmacology

Cellular LocationsMembrane

Uses & manufacturing

UsesUsed as a solvent; [CAMEO]

U.S. Production2023: <75,000 lb

Consumer UsesNot Known or Reasonably Ascertainable

Industry UsesOther

Household ProductsInformation on 4 consumer products that contain Ethyltoluene in the following categories is provided:

General Manufacturing Information · 2 items

Non-metallic Mineral Product Manufacturing (includes clay, glass, cement, concrete, lime, gypsum, and other non-metallic mineral product manufacturing)

Benzene, 1-ethyl-2-methyl-: ACTIVE