Substance profile
Dichloroacetyl chloride
Dichloroacetyl chloride is a LIQUID with a penetrating odor.
01 · Identification
What Dichloroacetyl chloride is
Dichloroacetyl chloride is a LIQUID with a penetrating odor. Its molecular formula is C2HCl3O and its molecular weight is 147.38 g/mol. It boils at 108 °C.
Under the GHS it carries the signal word Danger. It is classed as corrosives.
02 · Identifiers
Dichloroacetyl chloride identifiers and molecular data
Dichloroacetyl chloride CAS number and EC number
Dichloroacetyl chloride molecular formula and molecular weight
03 · GHS classification
Dichloroacetyl chloride hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Dichloroacetyl chloride pictograms and signal word
Dichloroacetyl chloride hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| 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.
Dichloroacetyl chloride hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H314 | Causes severe skin burns and eye damage. |
| H400 | Very toxic to aquatic life. |
This page lists only the codes assigned to Dichloroacetyl chloride. 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 Dichloroacetyl chloride
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 Dichloroacetyl… 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
Dichloroacetyl chloride precautionary statements
CLP Annex VI assigns 8 precautionary statements to Dichloroacetyl chloride. 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
Dichloroacetyl chloride 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 | дихлороацетилхлорид |
| Spanish español | Cloruro de dicloroacetilo |
| Czech čeština | dichloracetylchlorid |
| Danish dansk | dichloracetylchlorid |
| German Deutsch | Dichloracetylchlorid α, α-Dichloressigsäurechlorid |
| Estonian eesti | dikloroatsetüülkloriid |
| Greek ελληνικά | διχλωροακετυλοχλωρίδιο |
| English English | dichloroacetyl chloride |
| French français | chlorure de dichloroacétyle |
| Croatian hrvatski | dikloracetil-klorid |
| Italian italiano | cloruro di dicloroacetile |
| Latvian latviešu | dihloracetilhlorīds |
| Lithuanian lietuvių | dichloracetilchloridas |
| Hungarian magyar | diklóracetil-klorid |
| Maltese Malti | klorur tad-dikloroaċetil |
| Dutch Nederlands | dichlooracetylchloride |
| Polish polski | chlorek dichloroacetylu chlorek kwasu dichlorooctowego |
| Portuguese português | cloreto de dicloroacetilo |
| Romanian română | clorură de dicloroacetil |
| Slovak slovenčina | dichlóracetylchlorid |
| Slovenian slovenščina | dikloroacetil klorid |
| Finnish suomi | diklooriasetyylikloridi |
| Swedish svenska | dikloracetylklorid |
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
Dichloroacetyl chloride GHS label elements
Everything CLP Annex VI fixes for Dichloroacetyl chloride, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Dichloroacetyl chloride
- Causes severe skin burns and eye damage.
- Very toxic to aquatic life.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Avoid release to the environment.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- Immediately call a POISON CENTER/doctor/…
- 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 Dichloroacetyl chloride in the GHS label constructor →
07 · Health hazards
Dichloroacetyl chloride health hazards and exposure limits
Dichloroacetyl chloride hazard summary
Highly corrosive to skin; [Quick CPC] Tear drawing. High inhalation exposure can cause pulmonary edema; [ICSC]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
Dichloroacetyl chloride 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.
Dichloroacetyl chloride boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 108 °C (226.4 °F) | at 760 mmHg | DOE PAC |
| 107.5 °C (225.5 °F) | range, midpoint shown, at 760 mmHg | HSDB |
Dichloroacetyl chloride density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.5 g/cm³ | ICSC | |
| 1.5315 g/cm³ | at 16.11 °C | CAMEO | |
| 1.5315 g/cm³ | at 16 °C | HSDB |
Dichloroacetyl chloride solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | SOL IN ETHER | HSDB | |
| Decomposes (NTP, 1992) | decomposes | CAMEO | |
| Solubility in water: decomposes | decomposes | ICSC |
Dichloroacetyl chloride vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 23.2519 mmHg | at 20 °C | ICSC |
| 154 mmHg | at 25 °C | CAMEO | |
| 23 mmHg | Haz-Map |
Dichloroacetyl chloride flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 66 °C (150.8 °F) | HSDB | |
| 66.11 °C (151 °F) | CAMEO |
Dichloroacetyl chloride autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 585 °C (1085 °F) | ICSC |
Dichloroacetyl chloride lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | Explosive limits , vol% in air: 11.9-? | ICSC |
Dichloroacetyl chloride vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 5.1 (air = 1) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Handling and storage
Dichloroacetyl chloride storage and handling
Dichloroacetyl chloride safe storage
Separated from strong oxidants, strong bases, food and feedstuffs, alcohols and water. Dry. Well closed. Keep in a well-ventilated room.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Dichloroacetyl chloride reactivity
Solutions of DICHLOROACETYL CHLORIDE in acetone are stable for less than two hours and fresh solution should be prepared before each use (NIP). May react vigorously or explosively if mixed with diisopropyl ether or other ethers in the presence of trace amounts of metal salts [J. Haz. Mat., 1981, 4, 291].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Dichloroacetyl chloride in the storage compatibility matrix →
10 · Transport
Dichloroacetyl chloride 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.
Dichloroacetyl chloride under UN 1765 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| DICHLOROACETYL CHLORIDE | 8 | C3 | II | |
Source: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE). Class 8 is “Corrosive substances” (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) |
|---|---|---|---|
| Dichloroacetyl chloride | 8 | II | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 8 is “Corrosive material” (49 CFR 173.2).
11 · Questions
Dichloroacetyl chloride — frequently asked questions
What is the CAS number of Dichloroacetyl chloride?
The CAS number of Dichloroacetyl chloride is 79-36-7. Its EC number is 201-199-9.
What is the chemical formula of Dichloroacetyl chloride?
The molecular formula of Dichloroacetyl chloride is C2HCl3O and its molecular weight is 147.38 g/mol.
What does a Dichloroacetyl chloride label have to show?
Under CLP Annex VI the label for Dichloroacetyl chloride carries the pictograms Corrosion and Environment and the signal word is Danger.
Is Dichloroacetyl chloride flammable?
CLP Annex VI assigns Dichloroacetyl chloride 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 66 °C (150.8 °F) (HSDB).
Is Dichloroacetyl chloride a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Dichloroacetyl chloride. 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 Dichloroacetyl chloride?
The boiling point reported for Dichloroacetyl chloride is 108 °C (226.4 °F), at 760 mmHg (DOE PAC).
Nearby
Substances next to Dichloroacetyl chloride
Keep going: substances starting with D, or search the whole database by name, CAS number, pictogram or signal word.