Substance profile
Chloridazon
Chloridazon is a colorless solid and is odorless.
01 · Identification
What Chloridazon is
Chloridazon is a colorless solid and is odorless. Its molecular formula is C10H8ClN3O and its molecular weight is 221.64 g/mol. It melts at 206 °C.
Under the GHS it carries the signal word Warning.
02 · Identifiers
Chloridazon identifiers and molecular data
Chloridazon CAS number and EC number
Chloridazon molecular formula and molecular weight
Other names for Chloridazon
- chloridazon (ISO)
- 5-amino-4-chloro-2-phenylpyridazine-3-(2H)-one
- pyrazon
03 · GHS classification
Chloridazon hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Chloridazon pictograms and signal word
Chloridazon hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Skin sensitisation GHS chapter 3.4 | Category 1 or 1A or 1B | H317 | GHS07 |
| Hazardous to the aquatic environment - acute GHS chapter 4.1 | Category 1 | H400 | GHS09 |
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 1 | H410 | 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.
Chloridazon hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H317 | May cause an allergic skin reaction. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to Chloridazon. 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 Chloridazon
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 Chloridazon 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
Chloridazon precautionary statements
CLP Annex VI assigns 8 precautionary statements to Chloridazon. 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
Chloridazon 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 | хлоридазон (ISO) 5-амино-2-фенил-4-хлоропиридазин-3-(2 H )-онпиразон |
| Spanish español | Cloridazón (ISO) 5-amino-4-cloro-2-fenilpiridazina-3-(2 H )-onapirazón |
| Czech čeština | chloridazon (ISO) 5-amino-4-chlor-2-fenylpyridazin-3(2 H )-onpyrazon |
| Danish dansk | cloridazon (ISO) 5-amino-4-chlor-2-phenylpyridazin-3-onpyrazon |
| German Deutsch | Chloridazon (ISO) 5-Amino-4-chlor-2-phenylpyridazin-3-(2 H )-onPyrazon |
| Estonian eesti | kloridasoon (ISO) 5-amino-4-kloro-2-fenüülpüridasiin-3-(2 H )-oonpürasoon |
| Greek ελληνικά | chloridazon (χλωριδαζόνη) (ISO) 5-αμινο-4-χλωρο-2-φαινυλοπυριδαζιν-3-(2H)-όνηπυραζόνη |
| English English | chloridazon (ISO) 5-amino-4-chloro-2-phenylpyridazine-3-(2H)-onepyrazon |
| French français | chloridazone (ISO) 5-amino-4-chloro-2-phénylpyridazine-3-(2H)-onepyrazone |
| Croatian hrvatski | kloridazon (ISO) 5-amino-4-klor-2-fenilpiridazin-3-(2 H )-onpirazon |
| Italian italiano | cloridazon (ISO) 5-ammino-4-cloro-2-fenilpiridazin-3(2 H )-onepirazone |
| Latvian latviešu | hloridazons (ISO) 5-amino-4-hlor-2-fenilpiridazīn-3-(2 H )-onspirazons |
| Lithuanian lietuvių | chloridazonas (ISO) 5-amino-4-chlor-2-fenilpiridazin-3-(2H)-onaspirazonas |
| Hungarian magyar | kloridazon (ISO) 5-amino-4-klór-2-fenilpiridazin-3-(2 H )-onpirazon |
| Maltese Malti | kloridażon (ISO) 5-ammino-4-kloro-2-fenilpiridażine-3-(2H)-onpirażon |
| Dutch Nederlands | chlooridazon (ISO) 5-amino-4-chloor-2-fenylpyridazine-3-(2 H )-onpyrazon |
| Polish polski | chlorydazon (ISO) 5-amino-4-chloro-2-fenylopirydazyn-3(2H)-onpirazon |
| Portuguese português | cloridazão (ISO) 5-amino-4-cloro-2-fenilpiridazin-3-(2 H )-onapirazona |
| Romanian română | cloridazon (ISO) 5-amino-4-cloro-2-fenilpiridazin-3-(2H)-onăpirazon |
| Slovak slovenčina | chloridazón (ISO) 5-amino-2-fenyl-4-chlórpyridazín-3(2 H )-ón pyrazón |
| Slovenian slovenščina | kloridazon (ISO) 5-amino-4-kloro-2-fenilpiridazin-3-(2H)-onpirazon |
| Finnish suomi | kloridatsoni (ISO) 5-amino-4-kloori-2-fenyylipyridatsiini-3-(2H)-onipyratsoni |
| Swedish svenska | kloridazon (ISO) 5-amino-4-klor-2-fenylpyridazin-3-(2 H )-onpyrazon |
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
Chloridazon GHS label elements
Everything CLP Annex VI fixes for Chloridazon, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
Chloridazon
- May cause an allergic skin reaction.
- Very toxic to aquatic life.
- Very toxic to aquatic life with long lasting effects.
- Avoid breathing dust/fume/gas/mist/vapours/spray.
- Contaminated work clothing should not be allowed out of the workplace.
- Avoid release to the environment.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- Get medical advice/attention.
- If skin irritation or rash occurs:
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Chloridazon in the GHS label constructor →
07 · Health hazards
Chloridazon health hazards and exposure limits
Chloridazon hazard summary
Repeated exposure may cause skin rashes; Case reports of slight liver enlargement; [HSDB] May cause skin sensitization; [eChemPortal: ESIS] May cause irritation; May cause skin sensitization; [MSDSonline]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
Chloridazon 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.
Chloridazon melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 206 °C (402.8 °F) | HSDB | |
| 190 °C (374 °F) | range, midpoint shown | HSDB | |
| 200 °C (392 °F) | range, midpoint shown | HSDB |
Chloridazon density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.54 g/cm³ | at 20 °C | HSDB |
Chloridazon solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | IN WATER 400 MG/L AT 20 °C; IN METHANOL 34 G/KG AT 20 °C; IN ACETONE 28 G/KG AT 20 °C; IN BENZENE 0.7 G/KG AT 20 °C | at 20 °C | HSDB |
| IN CYCLOHEXANE GREATER THAN 0.01 G/100 G @ 20 °C; IN CHLOROFORM 0.21 G/100 G @ 20 °C; IN ETHER 0.07 G/100 G @ 20 °C | at 20 °C | HSDB | |
| In distilled water, 340 mg/L at 20 °C | at 20 °C | HSDB |
Chloridazon vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 4.5e-7 mmHg | at 20 °C | HSDB |
| 4.5e-7 mmHg | Haz-Map |
Chloridazon corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | NONCORROSIVE | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Chloridazon 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.
Chloridazon fire potential
DRY POWDER, NONFLAMMABLE.
Source: Hazardous Substances Data Bank (HSDB)
10 · Questions
Chloridazon — frequently asked questions
What is the CAS number of Chloridazon?
The CAS number of Chloridazon is 1698-60-8. Its EC number is 216-920-2.
What is the chemical formula of Chloridazon?
The molecular formula of Chloridazon is C10H8ClN3O and its molecular weight is 221.64 g/mol.
What does a Chloridazon label have to show?
Under CLP Annex VI the label for Chloridazon carries the pictograms Exclamation mark and Environment and the signal word is Warning.
Is Chloridazon flammable?
CLP Annex VI assigns Chloridazon 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 Chloridazon a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Chloridazon. 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 melting point of Chloridazon?
The melting point reported for Chloridazon is 206 °C (402.8 °F) (HSDB).
Nearby
Substances next to Chloridazon
Keep going: substances starting with C, or search the whole database by name, CAS number, pictogram or signal word.