Substance profile
Dichlone
Dichlone is golden yellow needles or leaflets from alcohol.
01 · Identification
What Dichlone is
Dichlone is golden yellow needles or leaflets from alcohol. Its molecular formula is C10H4Cl2O2 and its molecular weight is 227.04 g/mol. It boils at 275 °C, melts at 195 °C.
Under the GHS it carries the signal word Warning.
Other names for Dichlone
- dichlone (ISO)
- 2,3-dichloro-1,4-naphthoquinone
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H302 | Harmful if swallowed. |
| H315 | Causes skin irritation. |
| H319 | Causes serious eye irritation. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P264, P270, P273, P280, P301, P302, P305, P312, P313, P330, P332, P337, P338, P352, P391, P501
03 · Physical and chemical properties
Dichlone 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.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 275 °C (527 °F) | sublimes | CAMEO |
| 275 °C (527 °F) | at 2 mmHg (reduced pressure) | HSDB | |
| Melting point | 195 °C (383 °F) | HSDB | |
| 193 °C (379.4 °F) | CAMEO | ||
| 188 °C (370.4 °F) | above this value, Technical Grade | HSDB | |
| Solubility | Slightly sol in alcohol, ether, benzene | HSDB | |
| About 4% in xylene, o-dichlorobenzene. Moderately soluble in acetone, dioxane | HSDB | ||
| In water, 8.0 mg/L; water buffered to pH 7.4. | Temp not specified | HSDB | |
| Vapor pressure | 0.0000011 mmHg | at 25 °C | HSDB |
| 0.0000011 mmHg | Haz-Map | ||
| Vapor density | 7.8 (air = 1) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Dichlone
Storage conditions
Keep out of reach of children. Keep away from food, drink, and animal feeding stuffs.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Incompatible with petroleum oils, dinitro compounds, organomercury compounds, calcium arsenate, lime sulfur, Bordeaux mixture, nicotine, and emulsifiable concentrate formulations.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
DICHLONE is a halogenated ketone. Ketones are reactive with many acids and bases liberating heat and flammable gases (e.g., H2). The amount of heat may be sufficient to start a fire in the unreacted portion of the ketone. Ketones react with reducing agents such as hydrides, alkali metals, and nitrides to produce flammable gas (H2) and heat. Ketones are incompatible with isocyanates, aldehydes, cyanides, peroxides, and anhydrides. They react violently with aldehydes, HNO3, HNO3 + H2O2, and HClO4.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Dichlone in the storage compatibility matrix →