Substance profile
Methylcyclohexane
Methylcyclohexane is a colorless liquid with a faint, benzene-like odor.
01 · Identification
What Methylcyclohexane is
Methylcyclohexane is a colorless liquid with a faint, benzene-like odor. Its molecular formula is C7H14 and its molecular weight is 98.19 g/mol. It boils at 101 °C, melts at -127 °C, is miscible with water.
Under the GHS it carries the signal word Danger. It is classed as flammable agents - 3rd degree.
02 · Identifiers
Methylcyclohexane identifiers and molecular data
Methylcyclohexane CAS number and EC number
Methylcyclohexane molecular formula and molecular weight
03 · GHS classification
Methylcyclohexane hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Methylcyclohexane pictograms and signal word
Methylcyclohexane hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Flammable liquids GHS chapter 2.6 | Category 2 | H225 | GHS02 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 2 | H315 | GHS07 |
| Specific target organ toxicity - single exposure GHS chapter 3.8 | Category 3 narcotic | H336 | GHS07 |
| Aspiration hazard GHS chapter 3.10 | Category 1 | H304 | GHS08 |
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 2 | H411 | GHS09 |
Methylcyclohexane hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H225 | Highly flammable liquid and vapour. |
| H304 | May be fatal if swallowed and enters airways. |
| H336 | May cause drowsiness or dizziness. |
| H315 | Causes skin irritation. |
| H411 | Toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to Methylcyclohexane. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for Methylcyclohexane
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Methylcyclohexane issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
Methylcyclohexane precautionary statements
CLP Annex VI assigns 14 precautionary statements to Methylcyclohexane. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Disposal
What has to happen to the contents and the empty container.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Methylcyclohexane name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | метилциклохексан |
| Spanish español | Metilciclohexano |
| Czech čeština | methylcyklohexan |
| Danish dansk | methylcyclohexan |
| German Deutsch | Methylcyclohexan |
| Estonian eesti | metüültsükloheksaan |
| Greek ελληνικά | μεθυλοκυκλοεξάνιο |
| English English | methylcyclohexane |
| French français | méthylcyclohexane |
| Croatian hrvatski | metilcikloheksan |
| Italian italiano | metilcicloesano |
| Latvian latviešu | metilcikloheksāns |
| Lithuanian lietuvių | metilcikloheksanas |
| Hungarian magyar | metilciklohexán |
| Maltese Malti | metilċikloeżan |
| Dutch Nederlands | methylcyclohexaan |
| Polish polski | metylocykloheksan |
| Portuguese português | metilciclo-hexano |
| Romanian română | metilciclohexan |
| Slovak slovenčina | metylcyklohexán |
| Slovenian slovenščina | metilcikloheksan |
| Finnish suomi | metyylisykloheksaani |
| Swedish svenska | metylcyklohexan |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Methylcyclohexane GHS label elements
Everything CLP Annex VI fixes for Methylcyclohexane, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Methylcyclohexane
- Highly flammable liquid and vapour.
- May be fatal if swallowed and enters airways.
- May cause drowsiness or dizziness.
- Causes skin irritation.
- Toxic to aquatic life with long lasting effects.
- Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
- Keep container tightly closed.
- Use explosion-proof [electrical/ventilating/lighting/…] equipment.
- Use only non-sparking tools.
- Wash … thoroughly after handling.
- Avoid release to the environment.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF ON SKIN:
- Get medical advice/attention.
- If skin irritation occurs:
- Wash with plenty of water/…
- Collect spillage.
- Store in a well-ventilated place.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Methylcyclohexane in the GHS label constructor →
07 · Health hazards
Methylcyclohexane health hazards and exposure limits
Methylcyclohexane occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 500.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| PEL | 500 ppm (2000 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| PEL | TWA 500 ppm (2000 mg/m3) See Appendix G | The National Institute for Occupational Safety and Health (NIOSH) |
| REL | 400 ppm (1600 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| REL | TWA 400 ppm (1600 mg/m3) | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | 1200 ppm ; Based on the lower explosive limit. (NIOSH, 2024) | CAMEO Chemicals |
| IDLH | 1200.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | 1200 ppm | Occupational Safety and Health Administration (OSHA) |
These are United States values. The European Union sets its own indicative and binding limits, and the figure that applies at a given workplace is the one in the local regulation — not the one shown here.
08 · Physical and chemical properties
Methylcyclohexane properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
Methylcyclohexane boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 100.9 °C (213.6 °F) | at 760 mmHg | HSDB |
| 101.11 °C (214 °F) | NIOSH | ||
| 101 °C (213.8 °F) | at 760 mmHg | CAMEO |
Methylcyclohexane melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | -126.6 °C (-195.9 °F) | HSDB | |
| -126.67 °C (-196 °F) | NIOSH | ||
| -126 °C (-194.8 °F) | CAMEO |
Methylcyclohexane density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.77 g/cm³ | NIOSH | |
| 0.7694 g/cm³ | at 20 °C | HSDB |
Methylcyclohexane solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | SOL IN ALCOHOL, ETHER, ACETONE, BENZENE | HSDB | |
| MISCIBLE WITH PETROLEUM ETHER, CARBON TETRACHLORIDE | HSDB | ||
| 14.0 mg/l at 20 °C | at 20 °C | HSDB |
Methylcyclohexane vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 37 mmHg | NIOSH | |
| 83.29 mmHg | CAMEO | ||
| 46 mmHg | at 25 °C | HSDB |
Methylcyclohexane flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | -3.89 °C (25 °F) | HSDB |
Methylcyclohexane autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 250 °C (482 °F) | HSDB | |
| 258 °C (496.4 °F) | ICSC |
Methylcyclohexane lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | 1.2 % by volume | HSDB |
Methylcyclohexane upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | 6.7 % by volume | HSDB |
Methylcyclohexane vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 3.39 (air = 1) | HSDB | |
| 3.4 (air = 1) | ICSC |
Methylcyclohexane odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| Odor threshold | 630 ug/l | HSDB | |
| Odor Threshold Low: 500.0 [ppm] | Haz-Map | ||
| Odor threshold from CHEMINFO | Haz-Map |
Methylcyclohexane critical temperature and pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Critical temperature and pressure | 299.05 °C (570.3 °F) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Methylcyclohexane fire and explosion behaviour
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
Methylcyclohexane fire potential
DANGEROUS /FIRE HAZARD/ WHEN EXPOSED TO HEAT, FLAME, OR OXIDIZERS
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
Methylcyclohexane storage and handling
Methylcyclohexane safe storage
Fireproof. Separated from strong oxidants.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Methylcyclohexane storage conditions
Storage rooms should be bunded to prevent the spread of escaping liquid & electrical installations should be of flameproof type.
Source: Hazardous Substances Data Bank (HSDB)
Methylcyclohexane incompatible materials
Strong oxidizers
Source: Hazardous Substances Data Bank (HSDB)
Methylcyclohexane reactivity
Saturated aliphatic hydrocarbons, such as METHYLCYCLOHEXANE, may be incompatible with strong oxidizing agents like nitric acid. Charring of the hydrocarbon may occur followed by ignition of unreacted hydrocarbon and other nearby combustibles. In other settings, aliphatic saturated hydrocarbons are mostly unreactive. They are not affected by aqueous solutions of acids, alkalis, most oxidizing agents, and most reducing agents.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Methylcyclohexane in the storage compatibility matrix →
11 · Transport
Methylcyclohexane UN number and transport classification
Transport classification is a separate system from the GHS classification above. It decides how a package is marked and how a load may be carried; it does not follow from the workplace label, and the workplace label does not follow from it. The entries below are linked by CAS number, never by name.
Methylcyclohexane under UN 2296 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| METHYLCYCLOHEXANE | 3 | F1 | II | |
Source: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE). Class 3 is “Flammable liquids” (ADR 2.1.1.1).
United States · 49 CFR 172.101 Hazardous Materials Table
| Proper shipping name (column 2) | Class or division | PG | Labels (column 6) |
|---|---|---|---|
| Methylcyclohexane | 3 | II | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 3 is “Flammable and combustible liquid” (49 CFR 173.2).
12 · Questions
Methylcyclohexane — frequently asked questions
What is the CAS number of Methylcyclohexane?
The CAS number of Methylcyclohexane is 108-87-2. Its EC number is 203-624-3.
What is the chemical formula of Methylcyclohexane?
The molecular formula of Methylcyclohexane is C7H14 and its molecular weight is 98.19 g/mol.
What does a Methylcyclohexane label have to show?
Under CLP Annex VI the label for Methylcyclohexane carries the pictograms Flame, Health hazard, Exclamation mark and Environment and the signal word is Danger.
Is Methylcyclohexane flammable?
Yes. CLP Annex VI assigns Methylcyclohexane H225 — highly flammable liquid and vapour. The flash point reported for it is -3.89 °C (25 °F) (HSDB).
Is Methylcyclohexane a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Methylcyclohexane. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the exposure limit for Methylcyclohexane?
The US occupational exposure limit reported for Methylcyclohexane is 500.0 [ppm] (Haz-Map, Information on Hazardous Chemicals and Occupational Diseases). Limits differ by country: the EU sets its own indicative and binding values, and the figure that applies at a given workplace is the one in the local regulation.
What is the boiling point of Methylcyclohexane?
The boiling point reported for Methylcyclohexane is 100.9 °C (213.6 °F), at 760 mmHg (HSDB).
What is the melting point of Methylcyclohexane?
The melting point reported for Methylcyclohexane is -126.6 °C (-195.9 °F) (HSDB).
How should Methylcyclohexane be stored?
CLP Annex VI assigns Methylcyclohexane the storage statement P403. Storage rooms should be bunded to prevent the spread of escaping liquid & electrical installations should be of flameproof type. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Methylcyclohexane
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