Substance profile
Tetrahydrothiophene-1,1-dioxide
Tetrahydrothiophene-1,1-dioxide is a white or creamy white, crystalline powder and is odorless.
01 · Identification
What Tetrahydrothiophene-1,1-dioxid… is
Tetrahydrothiophene-1,1-dioxide is a white or creamy white, crystalline powder and is odorless. It boils at 285 °C, melts at 26.1 °C.
Under the GHS it carries the signal word Warning.
02 · Identifiers
Tetrahydrothiophene-1,1-dioxid… identifiers and molecular data
Tetrahydrothiophene-1,1-dioxid… CAS number and EC number
Other names for Tetrahydrothiophene-1,1-dioxid…
- sulpholane
03 · GHS classification
Tetrahydrothiophene-1,1-dioxid… hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Tetrahydrothiophene-1,1-dioxid… pictograms and signal word
Tetrahydrothiophene-1,1-dioxid… hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
Tetrahydrothiophene-1,1-dioxid… hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H302 | Harmful if swallowed. |
This page lists only the codes assigned to Tetrahydrothiophene-1,1-di…. 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 Tetrahydrothiophene-1,1-di…
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 Tetrahydrothiophene-1… 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
Tetrahydrothiophene-1,1-dioxid… precautionary statements
CLP Annex VI assigns 4 precautionary statements to Tetrahydrothiophene-1,1-di…. 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.
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
Tetrahydrothiophene-1,1-dioxid… 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 | тетрахидротиофен-1,1-диоксид сулфолан |
| Spanish español | 1,1-Dióxido de tetrahidrotiofeno sulfolano |
| Czech čeština | tetrahydrothiofen-1,1-dioxid sulfolan |
| Danish dansk | tetrahydrothiophen-1,1-dioxid sulfolan |
| German Deutsch | Tetrahydrothiophen-1,1-dioxid Sulfolan |
| Estonian eesti | tetrahüdrotiofeen-1,1-dioksiid sulfolaan |
| Greek ελληνικά | 1,1-διοξείδιο του τετραϋδρoθειοφαινίου σουλφολάνιο |
| English English | tetrahydrothiophene-1,1-dioxide sulpholane |
| French français | 1,1-dioxyde de tétrahydrothiophène sulfolane |
| Croatian hrvatski | tetrahidrotiofen-1,1-dioksid sulfolan |
| Italian italiano | tetraidrotiofene 1,1-diossido |
| Latvian latviešu | tetrahidrotiofēn-1,1-dioksīds sulfolans |
| Lithuanian lietuvių | tetrahidrotiofeno 1,1-dioksidas sulfolanas |
| Hungarian magyar | tetrahidrotiofén-1,1-dioxid szulfolán |
| Maltese Malti | tetraidrotijofen-1,1-diossidu sulfolan |
| Dutch Nederlands | tetrahydrothiofeen-1,1-dioxide sulfolaan |
| Polish polski | 1,1-ditlenek tetrahydrotiofenu sulfolan1,1-dioksotetrahydrotiofensulfon tetrametylenu |
| Portuguese português | 1,1-dióxido de tetra-hidrotiofeno sulfolano |
| Romanian română | 1,1-dioxid de tetrahidrotiofen sulfolan |
| Slovak slovenčina | tetrahydrotiofén-1,1-dioxid sulfolán |
| Slovenian slovenščina | tetrahidrotiofen-1,1-dioksid sulfolan |
| Finnish suomi | tetrahydrotiofeeni-1,1-dioksidi sulfolaani |
| Swedish svenska | tetrahydrotiofen-1,1-dioxid sulfolan |
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
Tetrahydrothiophene-1,1-dioxid… GHS label elements
Everything CLP Annex VI fixes for Tetrahydrothiophene-1,1-di…, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
Tetrahydrothiophene-1,1-dioxid…
- Harmful if swallowed.
- Do not eat, drink or smoke when using this product.
- IF SWALLOWED:
- Call a POISON CENTER/doctor/… if you feel unwell.
- Rinse mouth.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Tetrahydrothiophene-1,1-di… in the GHS label constructor →
07 · Health hazards
Tetrahydrothiophene-1,1-dioxid… health hazards and exposure limits
Tetrahydrothiophene-1,1-dioxid… hazard summary
Not irritating or sensitizing to rabbit skin; Mildly irritating to rabbit eyes; All rats convulsed during aerosolized exposure in lethal-concentration study; Convulsions observed in sub-chronic inhalation studies of dogs and monkeys and clonic-tonic convulsions noted in rats exposed by oral and parenteral routes; Intraperitoneal injection causes decreased metabolic rate and hypothermia in mice and rats; No evidence of mutagenicity; [HSDB] A mild eye irritant; [Alfa Aesar MSDS]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
Tetrahydrothiophene-1,1-dioxid… 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.
Tetrahydrothiophene-1,1-dioxid… boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 285 °C (545 °F) | HSDB | |
| 285 °C (545 °F) | at 760 mmHg | CAMEO |
Tetrahydrothiophene-1,1-dioxid… melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 26.11 °C (79 °F) | CAMEO | |
| 27.6 °C (81.7 °F) | range, midpoint shown | HSDB |
Tetrahydrothiophene-1,1-dioxid… density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.261 g/cm³ | at 25 °C | DOE PAC |
| 1.2606 g/cm³ | at 30 °C | HSDB | |
| 1.26 g/cm³ | at 30 °C | CAMEO |
Tetrahydrothiophene-1,1-dioxid… solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Freely soluble in alcohol, soluble in dilute mineral acids | HSDB | |
| Partially miscible with octanes, olefins, naphthenes; miscible with water, Acetone, toluene at 30 °C | at 30 °C | HSDB |
Tetrahydrothiophene-1,1-dioxid… vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.0062 mmHg | at 27.6 °C, Extrapolated | HSDB |
| 0.0062 mmHg | Haz-Map | ||
| Vapor pressure: 5 mm @ 118 °C | at 118 °C | HSDB |
Tetrahydrothiophene-1,1-dioxid… flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 177 °C (350.6 °F) | HSDB | |
| 165.56 °C (330 °F) | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Tetrahydrothiophene-1,1-di… 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.
Tetrahydrothiophene-1,1-dioxid… fire potential
Combustible when exposed to heat or flame.
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
Tetrahydrothiophene-1,1-dioxid… storage and handling
Tetrahydrothiophene-1,1-dioxid… incompatible materials
Nitronium tetrafluoroborate /is potentially explosive/ in sulfolane.
Source: Hazardous Substances Data Bank (HSDB)
Tetrahydrothiophene-1,1-dioxid… reactivity
Mixing SULFOLANE in equal molar portions with any of the following substances in a closed container caused the temperature and pressure to increase: chlorosulfonic acid and oleum [NFPA 1991]. With nitrating agents (nitronium tetrafluoroborate in sulfolane) very highly exothermic reactions are known to occur [J. Org. Chem., 1978, 43, 4677].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Tetrahydrothiophene-1,1-d… in the storage compatibility matrix →
11 · Questions
Tetrahydrothiophene-1,1-dioxid… — frequently asked questions
What is the CAS number of Tetrahydrothiophene-1,1-dioxid…?
The CAS number of Tetrahydrothiophene-1,1-dioxid… is 126-33-0. Its EC number is 204-783-1.
What does a Tetrahydrothiophene-1,1-dioxid… label have to show?
Under CLP Annex VI the label for Tetrahydrothiophene-1,1-dioxid… carries the pictogram Exclamation mark and the signal word is Warning.
Is Tetrahydrothiophene-1,1-dioxid… flammable?
CLP Annex VI assigns Tetrahydrothiophene-1,1-dioxid… 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. The flash point reported for it is 177 °C (350.6 °F) (HSDB).
Is Tetrahydrothiophene-1,1-dioxid… a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Tetrahydrothiophene-1,1-dioxid…. 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 boiling point of Tetrahydrothiophene-1,1-dioxid…?
The boiling point reported for Tetrahydrothiophene-1,1-dioxid… is 285 °C (545 °F) (HSDB).
What is the melting point of Tetrahydrothiophene-1,1-dioxid…?
The melting point reported for Tetrahydrothiophene-1,1-dioxid… is 26.11 °C (79 °F) (CAMEO).
Nearby
Substances next to Tetrahydrothiophene-1,1-di…
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