Substance profile
Antimony pentachloride
Antimony pentachloride is a colorless or yellow liquid with a pungent; offensive odor.
01 · Identification
What Antimony pentachloride is
Antimony pentachloride is a colorless or yellow liquid with a pungent; offensive odor. Its molecular formula is Cl5Sb and its molecular weight is 299 g/mol. It boils at 140 °C, melts at 4 °C.
Under the GHS it carries the signal word Danger. It is classed as corrosives.
02 · Identifiers
Antimony pentachloride identifiers and molecular data
Antimony pentachloride CAS number and EC number
Antimony pentachloride molecular formula and molecular weight
03 · GHS classification
Antimony pentachloride hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Antimony pentachloride pictograms and signal word
Antimony pentachloride 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 - chronic GHS chapter 4.1 | Category 2 | H411 | 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.
Antimony pentachloride hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H314 | Causes severe skin burns and eye damage. |
| H411 | Toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to Antimony pentachloride. 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 Antimony pentachloride
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 Antimony pentachloride 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
Antimony pentachloride precautionary statements
CLP Annex VI assigns 8 precautionary statements to Antimony pentachloride. 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
Antimony pentachloride 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 | антимонов пентахлорид |
| Spanish español | Pentacloruro de antimonio |
| Czech čeština | chlorid antimoničný |
| Danish dansk | antimonpentachlorid |
| German Deutsch | Antimonpentachlorid |
| Estonian eesti | antimonpentakloriid |
| Greek ελληνικά | πενταχλωριούχο αντιμόνιο |
| English English | antimony pentachloride |
| French français | pentachlorure d'antimoine |
| Croatian hrvatski | antimonov pentaklorid |
| Italian italiano | pentacloruro di antimonio |
| Latvian latviešu | antimona pentahlorīds |
| Lithuanian lietuvių | stibio pentachloridas |
| Hungarian magyar | antimon-pentaklorid |
| Maltese Malti | perntaklorur tal-antimonju |
| Dutch Nederlands | antimoonpentachloride |
| Polish polski | chlorek antymonu(V) pentachlorek antymonuchlorek antymonowy |
| Portuguese português | pentacloreto de antimónio |
| Romanian română | pentaclorură de antimoniu |
| Slovak slovenčina | chlorid antimoničný |
| Slovenian slovenščina | antimonov pentaklorid |
| Finnish suomi | antimonipentakloridi |
| Swedish svenska | antimonpentaklorid |
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
Antimony pentachloride GHS label elements
Everything CLP Annex VI fixes for Antimony pentachloride, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Antimony pentachloride
- Causes severe skin burns and eye damage.
- Toxic to aquatic life with long lasting effects.
- 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 Antimony pentachloride in the GHS label constructor →
07 · Health hazards
Antimony pentachloride health hazards and exposure limits
Antimony pentachloride hazard summary
A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; May cause pulmonary edema; [HSDB] Reacts violently with water; A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Inhalation may cause chemical pneumonitis; [MSDSonline] See Antimony and linked occupational diseases.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Antimony pentachloride occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 0.5 [mg/m3], as Sb | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | 50 mg Sb/m3 (NIOSH, 2024) | CAMEO Chemicals |
| IDLH | 50.0 [mg/m3], as Sb | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | 50 mg/cu m, as Sb /Antimony/ | 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
Antimony pentachloride 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.
Antimony pentachloride boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 140 °C (284 °F) | HSDB | |
| 175 °C (347 °F) | at 760 mmHg | CAMEO | |
| 69 °C (156.2 °F) | at 18 mmHg (reduced pressure) | HSDB |
Antimony pentachloride melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 4 °C (39.2 °F) | HSDB | |
| 2.78 °C (37 °F) | CAMEO |
Antimony pentachloride density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 3.1 g/cm³ | HSDB | |
| 2.354 g/cm³ | at 20 °C | CAMEO | |
| 2.336 g/cm³ | at 25 °C | DOE PAC |
Antimony pentachloride solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Reacts with water | HSDB | |
| Soluble in an aqueous solution of tartaric acid in hydrochloric acid and chloroform | HSDB | ||
| Soluble in hydrochloric acid, chloroform, carbon tetrachloride | HSDB |
Antimony pentachloride vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 1 mmHg | at 22.7 °C | HSDB |
| 1 mmHg | Haz-Map |
Antimony pentachloride corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Causes corrosion of metal | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Antimony pentachloride 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.
Antimony pentachloride fire potential
Not combustible
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
Antimony pentachloride storage and handling
Antimony pentachloride storage conditions
Separate from acids, alkalies. Store in a cool, dry, well-ventilated location.
Source: Hazardous Substances Data Bank (HSDB)
Antimony pentachloride incompatible materials
Incompatible with N-chlorodimethylamine, oxygen difluoride, and phosphonium iodide.
Source: Hazardous Substances Data Bank (HSDB)
Antimony pentachloride reactivity
ANTIMONY PENTACHLORIDE is a strong oxidizing agent, and it is easily hydrolyzed to generate hydrochloric acid and antimony oxides.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Antimony pentachloride in the storage compatibility matrix →
11 · Transport
Antimony pentachloride 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.
The same CAS number is shipped under more than one UN number. Which entry applies follows from the form and the concentration of the consignment — read the proper shipping name, not the CAS.
Antimony pentachloride under UN 1730 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| ANTIMONY PENTACHLORIDE, LIQUID | 8 | C1 | 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) |
|---|---|---|---|
| Antimony pentachloride, liquid | 8 | II | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 8 is “Corrosive material” (49 CFR 173.2).
Antimony pentachloride under UN 1731 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| ANTIMONY PENTACHLORIDE SOLUTION | 8 | C1 | II | |
| ANTIMONY PENTACHLORIDE SOLUTION | 8 | C1 | III | |
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) |
|---|---|---|---|
| Antimony pentachloride, solutions | 8 | II | |
| Antimony pentachloride, solutions | 8 | III | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 8 is “Corrosive material” (49 CFR 173.2).
12 · Questions
Antimony pentachloride — frequently asked questions
What is the CAS number of Antimony pentachloride?
The CAS number of Antimony pentachloride is 7647-18-9. Its EC number is 231-601-8.
What is the chemical formula of Antimony pentachloride?
The molecular formula of Antimony pentachloride is Cl5Sb and its molecular weight is 299 g/mol.
What does a Antimony pentachloride label have to show?
Under CLP Annex VI the label for Antimony pentachloride carries the pictograms Corrosion and Environment and the signal word is Danger.
Is Antimony pentachloride flammable?
CLP Annex VI assigns Antimony pentachloride 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 Antimony pentachloride a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Antimony pentachloride. 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 Antimony pentachloride?
The US occupational exposure limit reported for Antimony pentachloride is 0.5 [mg/m3], as Sb (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 Antimony pentachloride?
The boiling point reported for Antimony pentachloride is 140 °C (284 °F) (HSDB).
What is the melting point of Antimony pentachloride?
The melting point reported for Antimony pentachloride is 4 °C (39.2 °F) (HSDB).
How should Antimony pentachloride be stored?
Separate from acids, alkalies. Store in a cool, dry, well-ventilated location. (Hazardous Substances Data Bank (HSDB))
Nearby
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