Substance profile
3a,4,7,7a-tetrahydro-4,7-methanoindene
3a,4,7,7a-tetrahydro-4,7-methanoindene is a colorless crystalline solid with a disagreeable camphor-like odor.
01 · Identification
What 3a,4,7,7a-tetrahydro-4,7-metha… is
3a,4,7,7a-tetrahydro-4,7-methanoindene is a colorless crystalline solid with a disagreeable camphor-like odor. Its molecular formula is C10H12 and its molecular weight is 132.2 g/mol. It boils at 172 °C, melts at 32.9 °C.
Under the GHS it carries the signal word Danger. It is classed as flammable agents - 3rd degree.
02 · Identifiers
3a,4,7,7a-tetrahydro-4,7-metha… identifiers and molecular data
3a,4,7,7a-tetrahydro-4,7-metha… CAS number and EC number
3a,4,7,7a-tetrahydro-4,7-metha… molecular formula and molecular weight
03 · GHS classification
3a,4,7,7a-tetrahydro-4,7-metha… hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
3a,4,7,7a-tetrahydro-4,7-metha… pictograms and signal word
3a,4,7,7a-tetrahydro-4,7-metha… hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Flammable liquids GHS chapter 2.6 | Category 2 | H225 | GHS02 |
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 4 | H332 | GHS07 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 2 | H315 | GHS07 |
| Serious eye damage/eye irritation GHS chapter 3.3 | Category 2A | H319 | GHS07 |
| Specific target organ toxicity - single exposure GHS chapter 3.8 | Category 3 | H335 | GHS07 |
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 2 | H411 | GHS09 |
3a,4,7,7a-tetrahydro-4,7-metha… hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H225 | Highly flammable liquid and vapour. |
| H332 | Harmful if inhaled. |
| H302 | Harmful if swallowed. |
| H335 | May cause respiratory irritation. |
| H315 | Causes skin irritation. |
| H319 | Causes serious eye irritation. |
| H411 | Toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to 3a,4,7,7a-tetrahydro-4,7-m…. 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 3a,4,7,7a-tetrahydro-4,7-m…
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 3a,4,7,7a-tetrahydro-4… 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
3a,4,7,7a-tetrahydro-4,7-metha… precautionary statements
CLP Annex VI assigns 24 precautionary statements to 3a,4,7,7a-tetrahydro-4,7-m…. 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
3a,4,7,7a-tetrahydro-4,7-metha… 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 | 3a,4,7,7a-тетрахидро-4,7-метаноинден |
| Spanish español | 3a,4,7,7a-Tetrahidro-4,7-metanoindeno |
| Czech čeština | 3 a ,4,7,7 a -tetrahydro-4,7-methano-1 H -inden |
| Danish dansk | 3a,4,7,7a-tetrahydro-4,7-methanoinden |
| German Deutsch | 3a,4,7,7a-Tetrahydro-4,7-methanoinden Dicyclopentadien |
| Estonian eesti | 3a,4,7,7a-tetrahüdro-4,7-metanoindeen |
| Greek ελληνικά | 3a,4,7,7a-τετραϋδρο-4,7-μεθανοϊνδένιο |
| English English | 3a,4,7,7a-tetrahydro-4,7-methanoindene |
| French français | 3a,4,7,7a-tétrahydro-4,7-méthanoindène |
| Croatian hrvatski | 3a,4,7,7a-tetrahidro-4,7-metanoinden |
| Italian italiano | 3a,4,7,7a-tetraidro-4,7-metanoindene |
| Latvian latviešu | 3a,4,7,7a-tetrahidro-4,7-metanoindēns |
| Lithuanian lietuvių | 3a,4,7,7a-tetrahidro-4,7-metanoindenas |
| Hungarian magyar | 3a,4,7,7a-tetrahidro-4,7-metanoindén |
| Maltese Malti | 3a,4,7,7a-tetraidro-4,7-metanoinden |
| Dutch Nederlands | 3a,4,7,7a-tetrahydro-4,7-methanoïndeen |
| Polish polski | 3a,4,7,7a-tetrahydro-4,7-metanoinden dicyklopentadien |
| Portuguese português | 3a,4,7,7a-tetra-hidro-4,7-metanoindeno |
| Romanian română | 3a,4,7,7a-tetrahidro-4,7-metanoinden |
| Slovak slovenčina | 3a,4,7,7a-tetrahydro-4,7-metanoindén |
| Slovenian slovenščina | 3a,4,7,7a-tetrahidro-4,7-metanoinden |
| Finnish suomi | 3a,4,7,7a-tetrahydro-4,7-metaani-indeeni |
| Swedish svenska | 3a,4,7,7a-tetrahydro-4,7-metanoinden |
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
3a,4,7,7a-tetrahydro-4,7-metha… GHS label elements
Everything CLP Annex VI fixes for 3a,4,7,7a-tetrahydro-4,7-m…, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
3a,4,7,7a-tetrahydro-4,7-metha…
- Highly flammable liquid and vapour.
- Harmful if inhaled.
- Harmful if swallowed.
- May cause respiratory irritation.
- Causes skin irritation.
- Causes serious eye 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.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Wash … thoroughly after handling.
- Do not eat, drink or smoke when using this product.
- Use only outdoors or in a well-ventilated area.
- Avoid release to the environment.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF ON SKIN:
- IF INHALED:
- IF IN EYES:
- Call a POISON CENTER/doctor/… if you feel unwell.
- Get medical advice/attention.
- Rinse mouth.
- If skin irritation occurs:
- If eye irritation persists:
- Remove contact lenses, if present and easy to do. Continue rinsing.
- 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 3a,4,7,7a-tetrahydro-4,7-m… in the GHS label constructor →
07 · Health hazards
3a,4,7,7a-tetrahydro-4,7-metha… health hazards and exposure limits
3a,4,7,7a-tetrahydro-4,7-metha… hazard summary
Exposed workers experienced headaches. The proposed TLVs arre expected to protect against CNS effects (tremors, loss of coordination, and unsteady gait) seen at 33 ppm in mice exposed for 9 days in one unpublished study. [ACGIH] A skin, eye, and respiratory tract irritant; [ICSC] In animal experiments, calves are intoxicated at a dose of 250 mg/kg. [HSDB] See Cyclopentadiene.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
3a,4,7,7a-tetrahydro-4,7-metha… occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | none See Appendix G | The National Institute for Occupational Safety and Health (NIOSH) |
| REL | 5 ppm (30 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| REL | TWA 5 ppm (30 mg/m3) | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | N.D. | The National Institute for Occupational Safety and Health (NIOSH) |
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
3a,4,7,7a-tetrahydro-4,7-metha… 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.
3a,4,7,7a-tetrahydro-4,7-metha… boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 172 °C (341.6 °F) | HSDB | |
| 172.22 °C (342 °F) | NIOSH | ||
| 172.22 °C (342 °F) | at 760 mmHg | CAMEO |
3a,4,7,7a-tetrahydro-4,7-metha… melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 32.9 °C (91.2 °F) | HSDB | |
| 32.22 °C (90 °F) | NIOSH | ||
| 33.61 °C (92.5 °F) | CAMEO |
3a,4,7,7a-tetrahydro-4,7-metha… density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.98 g/cm³ | ICSC | |
| 0.978 g/cm³ | at 20 °C | HSDB |
3a,4,7,7a-tetrahydro-4,7-metha… solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Very soluble in ethyl ether, ethanol | HSDB | |
| Readily sol in acetone, dichloromethane, ethyl acetate, n-hexane, and toluene. | HSDB | ||
| In water, 0.020 g/L at 25 °C | at 25 °C | HSDB |
3a,4,7,7a-tetrahydro-4,7-metha… vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 1.4 mmHg | NIOSH | |
| 1.4 mmHg | at 20 °C | HSDB | |
| 2.3 mmHg | at 25 °C | HSDB |
3a,4,7,7a-tetrahydro-4,7-metha… flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 24 °C (75.2 °F) | HSDB | |
| 32.22 °C (90 °F) | HSDB |
3a,4,7,7a-tetrahydro-4,7-metha… autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 502.78 °C (937 °F) | HSDB | |
| 505 °C (941 °F) | CAMEO | ||
| 503 °C (937.4 °F) | ICSC |
3a,4,7,7a-tetrahydro-4,7-metha… lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | 0.8 % by volume | HSDB |
3a,4,7,7a-tetrahydro-4,7-metha… upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | 6.3 % by volume | HSDB |
3a,4,7,7a-tetrahydro-4,7-metha… vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 4.55 (air = 1) | HSDB |
3a,4,7,7a-tetrahydro-4,7-metha… odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| Odor threshold | Human sensory response studies indicate that dicyclopentadiene can be detected in the range of 0.003 to 0.2 ppm ... | HSDB | |
| The odor threshold was reported as low as 0.003 ppm. | HSDB | ||
| 0.016 mg/cu m | HSDB |
3a,4,7,7a-tetrahydro-4,7-metha… critical temperature and pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Critical temperature and pressure | 386.8 °C (728.2 °F) | HSDB |
3a,4,7,7a-tetrahydro-4,7-metha… corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Non-corrosive | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
3a,4,7,7a-tetrahydro-4,7-m… 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.
3a,4,7,7a-tetrahydro-4,7-metha… fire potential
Flammable; fire hazard
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
3a,4,7,7a-tetrahydro-4,7-metha… storage and handling
3a,4,7,7a-tetrahydro-4,7-metha… peroxide formation
B: Compounds that form peroxides on concentration (distillation/evaporation)
Source: Lab and Research Safety, University of Minnesota
3a,4,7,7a-tetrahydro-4,7-metha… safe storage
Store only if stabilized. Store in an area without drain or sewer access. Fireproof. Cool. Keep in the dark. Separated from strong oxidants.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
3a,4,7,7a-tetrahydro-4,7-metha… storage conditions
Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage.
Source: Hazardous Substances Data Bank (HSDB)
3a,4,7,7a-tetrahydro-4,7-metha… incompatible materials
Incompatible materials: Strong oxidizing agents, Strong acids, Strong bases
Source: Hazardous Substances Data Bank (HSDB)
3a,4,7,7a-tetrahydro-4,7-metha… reactivity
DICYCLOPENTADIENE may react vigorously with oxidizing agents. May react exothermically with reducing agents to release hydrogen gas. Can undergo exothermic polymierization reactions In the presence of various catalysts (such as acids) or initiators, if subjected to heat for prolonged periods, or if contaminated. Many undergo autoxidation upon exposure to the air to form explosive peroxides.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 3a,4,7,7a-tetrahydro-4,7… in the storage compatibility matrix →
11 · Questions
3a,4,7,7a-tetrahydro-4,7-metha… — frequently asked questions
What is the CAS number of 3a,4,7,7a-tetrahydro-4,7-metha…?
The CAS number of 3a,4,7,7a-tetrahydro-4,7-metha… is 77-73-6. Its EC number is 201-052-9.
What is the chemical formula of 3a,4,7,7a-tetrahydro-4,7-metha…?
The molecular formula of 3a,4,7,7a-tetrahydro-4,7-metha… is C10H12 and its molecular weight is 132.2 g/mol.
What does a 3a,4,7,7a-tetrahydro-4,7-metha… label have to show?
Under CLP Annex VI the label for 3a,4,7,7a-tetrahydro-4,7-metha… carries the pictograms Flame, Exclamation mark and Environment and the signal word is Danger.
Is 3a,4,7,7a-tetrahydro-4,7-metha… flammable?
Yes. CLP Annex VI assigns 3a,4,7,7a-tetrahydro-4,7-metha… H225 — highly flammable liquid and vapour. The flash point reported for it is 24 °C (75.2 °F) (HSDB).
Is 3a,4,7,7a-tetrahydro-4,7-metha… a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for 3a,4,7,7a-tetrahydro-4,7-metha…. 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 3a,4,7,7a-tetrahydro-4,7-metha…?
The US occupational exposure limit reported for 3a,4,7,7a-tetrahydro-4,7-metha… is none See Appendix G (The National Institute for Occupational Safety and Health (NIOSH)). 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 3a,4,7,7a-tetrahydro-4,7-metha…?
The boiling point reported for 3a,4,7,7a-tetrahydro-4,7-metha… is 172 °C (341.6 °F) (HSDB).
What is the melting point of 3a,4,7,7a-tetrahydro-4,7-metha…?
The melting point reported for 3a,4,7,7a-tetrahydro-4,7-metha… is 32.9 °C (91.2 °F) (HSDB).
How should 3a,4,7,7a-tetrahydro-4,7-metha… be stored?
CLP Annex VI assigns 3a,4,7,7a-tetrahydro-4,7-metha… the storage statement P403. Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. (Hazardous Substances Data Bank (HSDB))
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