Substance profile
Isobenzan
Isobenzan is a whitish to light brown powder.
01 · Identification
What Isobenzan is
Isobenzan is a whitish to light brown powder. Its molecular formula is C9H4Cl8O and its molecular weight is 411.7 g/mol. It melts at 121 °C.
Under the GHS it carries the signal word Danger.
02 · Identifiers
Isobenzan identifiers and molecular data
Isobenzan CAS number and EC number
Isobenzan molecular formula and molecular weight
Other names for Isobenzan
- isobenzan (ISO)
- 1,3,4,5,6,7,8,8-octachloro-1,3,3a,4,7,7a-hexahydro-4,7-methanoisobenzofuran
03 · GHS classification
Isobenzan hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Isobenzan pictograms and signal word
Isobenzan hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 1 or 2 | H300 | GHS06 |
| Acute toxicity - dermal GHS chapter 3.1 | Category 1 or 2 | H310 | GHS06 |
| Hazardous to the aquatic environment - acute GHS chapter 4.1 | Category 1 | H400 | GHS09 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
Isobenzan hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H310 | Fatal in contact with skin. |
| H300 | Fatal if swallowed. |
| H400 | Very toxic to aquatic life. |
This page lists only the codes assigned to Isobenzan. 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 Isobenzan
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 Isobenzan 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
Isobenzan precautionary statements
CLP Annex VI assigns 10 precautionary statements to Isobenzan. 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
Isobenzan 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 | изобензан (ISO) 1,3,4,5,6,7,8,8-октахлоро-1,3,3a,4,7,7a-хексахидро-4,7-метаноизобензофуран |
| Spanish español | Isobenzán (ISO) 1,3,4,5,6,7,8,8-octacloro-1,3,3a,4,7,7a-hexahidro-4,7-metanoisobenzofurano |
| Czech čeština | isobenzan (ISO) 1,3,4,5,6,7,8,8-oktachlor-3a,4,7,7a-hexahydro-4,7-methano-1 H ,3 H -isobenzofuran |
| Danish dansk | isobenzan (ISO) 1,3,4,5,6,7,8,8-octachlor- 1,3,3a,4,7,7a-hexahydro-4,7- methanoisobenzofuran |
| German Deutsch | Isobenzan (ISO) 1,3,4,5,6,7,8,8-Octachlor-1,3,3a,4,7,7a-hexahydro-4,7-methanoisobenzofuran |
| Estonian eesti | isobensaan (ISO) 1,3,4,5,6,7,8,8-oktakloro-1,3,3a,4,7,7a-heksahüdro-4,7-metanoisobensofuraan |
| Greek ελληνικά | isobenzan (ισοβενζάνη) (ISO) 1,3,4,5,6,7,8,8-οκταχλωρο-1,3,3a,4,7,7a-εξαϋδρο-4,7-μεθανοϊσοβενζοφουράνιο |
| English English | isobenzan (ISO) 1,3,4,5,6,7,8,8-octachloro-1,3,3a,4,7,7a-hexahydro-4,7-methanoisobenzofuran |
| French français | isobenzan (ISO) 1,3,4,5,6,7,8,8-octachloro-1,3,3a,4,7,7a-hexahydro-4,7-méthanoisobenzofurane |
| Croatian hrvatski | izobenzan (ISO) 1,3,4,5,6,7,8,8-oktaklor-1,3,3a,4,7,7a-hekshidro-4,7-metanoizobenzofuran |
| Italian italiano | isobenzan (ISO) 1,3,4,5,6,7,8,8-ottacloro-1,3,3a,4,7,7a-esaidro-4,7-metanoisobenzofurano |
| Latvian latviešu | izobenzāns (ISO) 1,3,4,5,6,7,8,8-oktahlor-1,3,3a,4,7,7a-heksahidro-4,7-metanoizobenzfurāns |
| Lithuanian lietuvių | izobenzanas (ISO) 1,3,4,5,6,7,8,8-oktachlor-1,3,3a,4,7,7a-heksahidro-4,7-metanoizobenzofuranas |
| Hungarian magyar | izobenzán (ISO) 1,3,4,5,6,7,8,8-oktaklór-1,3,3a,4,7,7a-hexahidro-4,7-metanoizobenzofurán |
| Maltese Malti | isobenżan (ISO) 1,3,4,5,6,7,8,8-ottakloro-1,3,3a,4,7,7a-eżaidro-4,7-metanoisobenżofuran |
| Dutch Nederlands | isobenzan (ISO) 1,3,4,5,6,7,8,8-octachloor-1,3,3a,4,7,7a-hexahydro-4,7-methanoïsobenzofuran |
| Polish polski | izobenzan (ISO) 1,3,4,5,6,7,8,8-oktachloro-1,3,3a,4,7,7a-heksahydro-4,7-metanoizobenzofuran |
| Portuguese português | isobenzão (ISO) 1,3,4,5,6,7,8,8-octacloro-1,3,3a,4,7,7a-hexa-hidro-4,7-metanoisobenzofurano |
| Romanian română | izobenzan (ISO) 1,3,4,5,6,7,8,8-octacloro-1,3,3a,4,7,7a-hexahidro- 4,7-metanoisobenzofuran |
| Slovak slovenčina | izobenzán (ISO) 1,3,4,5,6,7,8,8-oktachlór-1,3,3a,4,7,7a-hexahydro-4,7-metanoizobenzofurán |
| Slovenian slovenščina | izobenzan (ISO) 1,3,4,5,6,7,8,8-oktakloro-1,3,3a,4,7,7a-heksahidro-4,7-metanoizobenzofuran |
| Finnish suomi | isobentsaani (ISO) 1,3,4,5,6,7,8,8-oktakloori-1,3,3a,4,7,7a-heksahydro-4,7-metaani-isobentsofuraani |
| Swedish svenska | isobenzan (ISO) 1,3,4,5,6,7,8,8-oktaklor-1,3,3a,4,7,7a-hexahydro-4,7-metanoisobensofuran |
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
Isobenzan GHS label elements
Everything CLP Annex VI fixes for Isobenzan, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Isobenzan
- Fatal in contact with skin.
- Fatal if swallowed.
- Very toxic to aquatic life.
- Do not eat, drink or smoke when using this product.
- Avoid release to the environment.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF ON SKIN:
- Immediately call a POISON CENTER/doctor/…
- Rinse mouth.
- Wash with plenty of water/…
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Isobenzan in the GHS label constructor →
07 · Health hazards
Isobenzan health hazards and exposure limits
Isobenzan hazard summary
Highly toxic by skin absorption, inhalation, and ingestion; Very slowly eliminated by the human body, with a blood half-life of 2.77 years; May cause convulsions and seizures; [CAMEO] Over stimulates the CNS causing convulsions; Slowly eliminated by the body; [INCHEM] May cause irritation; [MSDSonline]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
Isobenzan 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.
Isobenzan melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 121 °C (249.8 °F) | range, midpoint shown | HSDB |
| 121.11 °C (250 °F) | range, midpoint shown | CAMEO |
Isobenzan density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.87 g/cm³ | HSDB | |
| 1.87 g/cm³ | at 25 °C | DOE PAC |
Isobenzan solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Sol in ether, acetone, benzene, xylene, heavy aromatic naphtha | HSDB | |
| Greater than 1% in ethanol & kerosene | HSDB |
Isobenzan vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.000003 mmHg | at 20 °C | HSDB |
| 0.00000292 mmHg | at 20 °C | HSDB | |
| 0.00001 mmHg | at 25 °C | CAMEO |
Isobenzan lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | Non-flammable and non-explosive. (EPA, 1998) | CAMEO |
Isobenzan upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | Non-flammable and non-explosive. (EPA, 1998) | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Source notes
Further notes on Isobenzan
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.
Solubility
25 g/100 ml acetone at 25 °C, 38 g/100 ml benzene at 25 °C, 34 g/100 ml carbon tetrachloride at 25 °C, 2 g/100 ml fuel oil at 25 °C, 34 g/100 ml toluene at 25 °C, 29 g/100 ml xylene at 25 °C.
Source: HSDB
10 · Handling and storage
Isobenzan storage and handling
Isobenzan reactivity
Chlorine is evolved when ISOBENZAN is heated above 410F. Avoid acids, certain metal salts, and catalytically active carriers. [EPA, 1998].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Isobenzan in the storage compatibility matrix →
11 · Questions
Isobenzan — frequently asked questions
What is the CAS number of Isobenzan?
The CAS number of Isobenzan is 297-78-9. Its EC number is 206-045-4.
What is the chemical formula of Isobenzan?
The molecular formula of Isobenzan is C9H4Cl8O and its molecular weight is 411.7 g/mol.
What does a Isobenzan label have to show?
Under CLP Annex VI the label for Isobenzan carries the pictograms Skull and crossbones and Environment and the signal word is Danger.
Is Isobenzan flammable?
CLP Annex VI assigns Isobenzan no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it.
Is Isobenzan a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Isobenzan. 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 melting point of Isobenzan?
The melting point reported for Isobenzan is 121 °C (249.8 °F), range, midpoint shown (HSDB).
Nearby
Substances next to Isobenzan
Keep going: substances starting with I, or search the whole database by name, CAS number, pictogram or signal word.