Substance profile
Barium chlorate
Barium chlorate is white crystals.
01 · Identification
What Barium chlorate is
Barium chlorate is white crystals. It melts at 414 °C, is slightly soluble in water.
Under the GHS it carries the signal word Danger. It is classed as reactive agents - 1st degree.
02 · Identifiers
Barium chlorate identifiers and molecular data
Barium chlorate CAS number and EC number
Barium chlorate molecular formula and molecular weight
03 · GHS classification
Barium chlorate hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Barium chlorate pictograms and signal word
Barium chlorate hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Oxidising liquids or Oxidising solids | Category 1 | H271 | GHS03 |
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 4 | H332 | GHS07 |
| 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.
Barium chlorate hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H271 | May cause fire or explosion; strong oxidiser. |
| H332 | Harmful if inhaled. |
| H302 | Harmful if swallowed. |
| H411 | Toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to Barium chlorate. 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 Barium chlorate
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 Barium chlorate 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
Barium chlorate precautionary statements
CLP Annex VI assigns 10 precautionary statements to Barium chlorate. 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
Barium chlorate 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 | бариев хлорат |
| Spanish español | Clorato de bario |
| Czech čeština | chlorečnan barnatý |
| Danish dansk | bariumchlorat |
| German Deutsch | Bariumchlorat |
| Estonian eesti | baariumkloraat |
| Greek ελληνικά | χλωρικό βάριο |
| English English | barium chlorate |
| French français | chlorate de baryum |
| Croatian hrvatski | barijev klorat |
| Italian italiano | clorato di bario |
| Latvian latviešu | bārija hlorāts |
| Lithuanian lietuvių | bario chloratas |
| Hungarian magyar | bárium-klorát |
| Maltese Malti | klorat tal-barju |
| Dutch Nederlands | bariumchloraat |
| Polish polski | chloran(V) baru |
| Portuguese português | clorato de bário |
| Romanian română | clorat de bariu |
| Slovak slovenčina | chlorečnan bárnatý |
| Slovenian slovenščina | barijev klorat |
| Finnish suomi | bariumkloraatti |
| Swedish svenska | bariumklorat |
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
Barium chlorate GHS label elements
Everything CLP Annex VI fixes for Barium chlorate, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Barium chlorate
- May cause fire or explosion; strong oxidiser.
- Harmful if inhaled.
- Harmful if swallowed.
- Toxic to aquatic life with long lasting effects.
- 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.
- IF SWALLOWED:
- IF INHALED:
- Call a POISON CENTER/doctor/… if you feel unwell.
- Rinse mouth.
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Barium chlorate in the GHS label constructor →
07 · Health hazards
Barium chlorate health hazards and exposure limits
Barium chlorate hazard summary
A skin, eye, and respiratory tract irritant; Can induce methemoglobinemia; Can cause hypokalemia, cardiac arrhythmias, and muscular paralysis; [ICSC] See Barium.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Barium chlorate occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 0.5 [mg/m3], as Ba | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | 50.0 [mg/m3], as Ba | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
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
Barium chlorate 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.
Barium chlorate melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 414 °C (777.2 °F) | HSDB | |
| 413.89 °C (777 °F) | CAMEO |
Barium chlorate density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 3.179 g/cm³ | Monohydrate | HSDB |
| 3.2 g/cm³ | ICSC | ||
| 3.18 g/cm³ | at 20 °C | CAMEO |
Barium chlorate solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Slightly soluble in ethanol, acetone | HSDB | |
| Solubility in water, g/100ml: 27.4 (good) | ICSC | ||
| 37.9 g/ 100 g water at 25 °C | at 25 °C | HSDB |
Barium chlorate lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | Poisonous gases are produced in fire. | HSDB | |
| Prolonged exposure of the material to fire or heat can result in an explosion. | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Barium chlorate 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.
Barium chlorate fire potential
Cloth, leather, wood and paper are extremely flammable when impregnated by ... chlorates /Chlorates/
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
Barium chlorate storage and handling
Barium chlorate safe storage
Separated from combustible substances, reducing agents, ammonium compounds, metal powders and food and feedstuffs.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Barium chlorate storage conditions
Separate from acids, alkalies, reducing agents, combustibles, ammonium compounds. Store in a cool, dry, well-ventilated location.
Source: Hazardous Substances Data Bank (HSDB)
Barium chlorate incompatible materials
A strong oxidizer. Barium chlorate is a reactive chemical and is an explosion hazard. Violent reaction may occur with reducing materials, strong acids, powdered metals. Combustible materials will increase activity in fire.
Source: Hazardous Substances Data Bank (HSDB)
Barium chlorate reactivity
BARIUM CHLORATE is an oxidizing agent. Liberates explosive chlorine dioxide gas in the presence of a strong acid. Heating a moist metal chlorate and a dibasic organic acid liberates chlorine dioxide and carbon dioxide [Bretherick 1979 p. 100]. Mixtures with ammonium salts, powdered metals, silicon, sulfur, or sulfides are readily ignited and potentially explosive [Bretherick 1979 p. 806]. A combination, in finely divided form with finely divided aluminum can explode by heat, percussion, or friction [Mellor 2:310 1946-4].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Barium chlorate in the storage compatibility matrix →
11 · Transport
Barium chlorate 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.
Barium chlorate under UN 1445 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| BARIUM CHLORATE, SOLID | 5.1 | OT2 | II | |
Source: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE). Class 5.1 is “Oxidizing 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) |
|---|---|---|---|
| Barium chlorate, solid | 5.1 | II | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 5.1 is “Oxidizer” (49 CFR 173.2).
Barium chlorate under UN 3405 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| BARIUM CHLORATE SOLUTION | 5.1 | OT1 | II | |
| BARIUM CHLORATE SOLUTION | 5.1 | OT1 | III | |
Source: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE). Class 5.1 is “Oxidizing 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) |
|---|---|---|---|
| Barium chlorate, solution | 5.1 | II | |
| Barium chlorate, solution | 5.1 | III | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 5.1 is “Oxidizer” (49 CFR 173.2).
12 · Questions
Barium chlorate — frequently asked questions
What is the CAS number of Barium chlorate?
The CAS number of Barium chlorate is 13477-00-4. Its EC number is 236-760-7.
What does a Barium chlorate label have to show?
Under CLP Annex VI the label for Barium chlorate carries the pictograms Flame over circle, Exclamation mark and Environment and the signal word is Danger.
Is Barium chlorate flammable?
CLP Annex VI assigns Barium chlorate 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 Barium chlorate a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Barium chlorate. 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 Barium chlorate?
The US occupational exposure limit reported for Barium chlorate is 0.5 [mg/m3], as Ba (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 melting point of Barium chlorate?
The melting point reported for Barium chlorate is 414 °C (777.2 °F) (HSDB).
How should Barium chlorate be stored?
Separate from acids, alkalies, reducing agents, combustibles, ammonium compounds. Store in a cool, dry, well-ventilated location. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Barium chlorate
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