Substance profile
Disulphur dichloride
Disulphur dichloride is a light amber to yellowish red oily liquid with a suffocating odor.
01 · Identification
What Disulphur dichloride is
Disulphur dichloride is a light amber to yellowish red oily liquid with a suffocating odor. Its molecular formula is Cl2S2 and its molecular weight is 135 g/mol. It boils at 137 °C, melts at -77 °C.
Under the GHS it carries the signal word Danger. It is classed as corrosives.
02 · Identifiers
Disulphur dichloride identifiers and molecular data
Disulphur dichloride CAS number and EC number
Disulphur dichloride molecular formula and molecular weight
Other names for Disulphur dichloride
- sulfur monochloride
03 · GHS classification
Disulphur dichloride hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Disulphur dichloride pictograms and signal word
Disulphur dichloride hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 3 | H301 | GHS06 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 4 | H332 | GHS07 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 1A or 1B or 1C | H314 | GHS05 |
| 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.
Disulphur dichloride hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H301 | Toxic if swallowed. |
| H332 | Harmful if inhaled. |
| H314 | Causes severe skin burns and eye damage. |
| H400 | Very toxic to aquatic life. |
Disulphur dichloride supplemental EU statements (EUH)
| Code | Statement |
|---|---|
| EUH014 | Reacts violently with water. |
| EUH029 | Contact with water liberates toxic gas. |
This page lists only the codes assigned to Disulphur dichloride. 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 Disulphur dichloride
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 Disulphur dichloride 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
Disulphur dichloride precautionary statements
CLP Annex VI assigns 13 precautionary statements to Disulphur dichloride. 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
Disulphur dichloride 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 | дисерен дихлорид серен монохлорид |
| Spanish español | Dicloruro de diazufre monocloruro de azufre |
| Czech čeština | dichlordisulfan |
| Danish dansk | disvovldichlorid svovlmonochlorid |
| German Deutsch | Dischwefeldichlorid Schwefelmonochlorid |
| Estonian eesti | divääveldikloriid väävelmonokloriid |
| Greek ελληνικά | διχλωριούχο θείο μονοχλωριούχο θείο |
| English English | disulphur dichloride sulfur monochloride |
| French français | dichlorure de disoufre monochlorure de soufre |
| Croatian hrvatski | disumporov diklorid sumporov monoklorid |
| Italian italiano | monocloruro di zolfo zolfo monocloruro |
| Latvian latviešu | disēra dihlorīds sēra monohlorīds |
| Lithuanian lietuvių | disieros dichloridas sieros monochloridas |
| Hungarian magyar | dikén-diklorid kén-monoklorid |
| Maltese Malti | diklorur tad-dikubrit monoklorur tal-kubrit |
| Dutch Nederlands | dizwaveldichloride zwavelmonochloride |
| Polish polski | dichlorek disiarki monochlorek siarki |
| Portuguese português | dicloreto de dienxofre monocloreto de enxofre |
| Romanian română | diclorură de disulf monoclorură de sulf |
| Slovak slovenčina | dichlorid disíry chlorid sírny |
| Slovenian slovenščina | dižveplov diklorid žveplov monoklorid |
| Finnish suomi | dirikkidikloridi rikkikloridi |
| Swedish svenska | disvaveldiklorid svavelmonoklorid |
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
Disulphur dichloride GHS label elements
Everything CLP Annex VI fixes for Disulphur dichloride, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Disulphur dichloride
- Toxic if swallowed.
- Harmful if inhaled.
- Causes severe skin burns and eye damage.
- Very toxic to aquatic life.
- Reacts violently with water.
- Contact with water liberates toxic gas.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- 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 INHALED:
- Immediately call a POISON CENTER/doctor/…
- Call a POISON CENTER/doctor/… if you feel unwell.
- Rinse mouth.
- Do NOT induce vomiting.
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Disulphur dichloride in the GHS label constructor →
07 · Health hazards
Disulphur dichloride health hazards and exposure limits
Disulphur dichloride hazard summary
Highly corrosive to skin; [Quick CPC] Liquid causes second or third degree burns after short contact; [CHRIS] Sulfur monochloride is a respiratory irritant with a nauseating odor; it hydrolyzes into HCl and SO2. [ACGIH] Tear drawing. A corrosive substance that can cause pulmonary edema; [ICSC] Sulfur chlorides release HCl, SO2, and H2S when spilled in water; [ERG 2016]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Disulphur dichloride occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 1.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| PEL | 1 ppm (6 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| PEL | TWA 1 ppm (6 mg/m3) See Appendix G | The National Institute for Occupational Safety and Health (NIOSH) |
| REL | 1 ppm (6 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| REL | C 1 ppm (6 mg/m3) | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | 5 ppm (NIOSH, 2024) | CAMEO Chemicals |
| IDLH | 5.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | 5 ppm | Hazardous Substances Data Bank (HSDB) |
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
Disulphur dichloride 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.
Disulphur dichloride boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 137 °C (278.6 °F) | HSDB | |
| 137.78 °C (280 °F) | NIOSH | ||
| 137.78 °C (280 °F) | at 760 mmHg | CAMEO |
Disulphur dichloride melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | -77 °C (-106.6 °F) | HSDB | |
| -77.22 °C (-107 °F) | NIOSH | ||
| -80 °C (-112 °F) | CAMEO |
Disulphur dichloride density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.68 g/cm³ | NIOSH | |
| 1.6755 g/cm³ | at 21.11 °C | HSDB | |
| 1.68 g/cm³ | at 20 °C | CAMEO |
Disulphur dichloride solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Sol in alc, benzene, ether, carbon disulfide, carbon tetrachloride, oils | HSDB | |
| Decomposes | decomposes | NIOSH | |
| Decomposes (NIOSH, 2024) | decomposes | CAMEO |
Disulphur dichloride vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 7 mmHg | NIOSH | |
| 6.7506 mmHg | at 20 °C | ICSC |
Disulphur dichloride flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 118.33 °C (245 °F) | HSDB |
Disulphur dichloride autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 233.89 °C (453 °F) | HSDB | |
| 234 °C (453.2 °F) | ICSC |
Disulphur dichloride lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | Behavior in fire: Pressurized container may explode and release toxic, irritating vapors. | Hydrocloric acid | HSDB |
| Class IIIB Combustible Liquid: Fl.P. at or above 200 °F. | NIOSH |
Disulphur dichloride vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 4.66 (air = 1) | HSDB | |
| 4.7 (air = 1) | ICSC |
Disulphur dichloride odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| Odor threshold | Air: 0.77 ul/l; Odor safety class C; C= less than 50% of distracted persons perceive warning of TLV. | Hydrochloric acid | HSDB |
| Odor low: 7.0 mg/cu m; Odor high: 49.0 mg/cu m; strong irritating odor; Irritating concn= 49.00 mg/cu m. | Hydrochloric acid | HSDB |
Disulphur dichloride critical temperature and pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Critical temperature and pressure | 392 °C (737.6 °F) | HSDB |
Disulphur dichloride corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Sulfur monochloride will attack some forms of plastics, rubber, and coatings. | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Disulphur dichloride 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.
Disulphur dichloride fire potential
SULFUR CHLORIDE IS FLAMMABLE LIQUID WHICH GIVES RISE TO MODERATE FIRE HAZARD ...
Source: Hazardous Substances Data Bank (HSDB)
Corrosivity
Sulfur monochloride is minimally corrosive to carbon steel and iron when dry. When wet, it behaves like hydrochloric acid and attacks steel, cast iron, aluminum, stainless steels, copper and copper alloys, and many nickel-based materials.
Source: HSDB
10 · Handling and storage
Disulphur dichloride storage and handling
Disulphur dichloride safe storage
Separated from strong oxidants, peroxides, phosphorus oxides, organic compounds and food and feedstuffs. Cool. Dry. Well closed. Ventilation along the floor.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Disulphur dichloride storage conditions
Store in a cool, dry, well-ventilated location. Isolate from water & oxidizing materials.
Source: Hazardous Substances Data Bank (HSDB)
Disulphur dichloride incompatible materials
Reacts violently with water to produce heat & hydrogen chloride fumes. The solution is strongly acid.
Source: Hazardous Substances Data Bank (HSDB)
Disulphur dichloride reactivity
SULFUR MONOCHLORIDE poses a fire hazard in contact with organic matter. Can react violently with oxidizing agents to form toxic gases. Reacts violently with sodium peroxide, chromyl chloride, phosphorus trioxide. Emits highly toxic fumes of sulfur oxides and chlorides when heated to decomposition [Lewis, 3rd ed., 1993, p. 1196]. Reacts exothermically with tin, antimony, antimony sulfide, arsenic sulfide, mercury oxide. A mixture with potassium is shock-sensitive and explodes violently on heating [Mellor, 1947, 10, p.642]. Reacts particularly violently with dimethyl sulfoxide [Buckley, A., J. Chem. Ed., 1965, 42, p. 674].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Disulphur dichloride in the storage compatibility matrix →
11 · Questions
Disulphur dichloride — frequently asked questions
What is the CAS number of Disulphur dichloride?
The CAS number of Disulphur dichloride is 10025-67-9. Its EC number is 233-036-2.
What is the chemical formula of Disulphur dichloride?
The molecular formula of Disulphur dichloride is Cl2S2 and its molecular weight is 135 g/mol.
What does a Disulphur dichloride label have to show?
Under CLP Annex VI the label for Disulphur dichloride carries the pictograms Skull and crossbones, Corrosion and Environment and the signal word is Danger.
Is Disulphur dichloride flammable?
CLP Annex VI assigns Disulphur dichloride 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 118.33 °C (245 °F) (HSDB).
Is Disulphur dichloride a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Disulphur dichloride. 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 Disulphur dichloride?
The US occupational exposure limit reported for Disulphur dichloride is 1.0 [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 Disulphur dichloride?
The boiling point reported for Disulphur dichloride is 137 °C (278.6 °F) (HSDB).
What is the melting point of Disulphur dichloride?
The melting point reported for Disulphur dichloride is -77 °C (-106.6 °F) (HSDB).
How should Disulphur dichloride be stored?
Store in a cool, dry, well-ventilated location. Isolate from water & oxidizing materials. (Hazardous Substances Data Bank (HSDB))
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