Substance profile
Carbaryl
Carbaryl is colorless to light tan crystals and is odorless.
01 · Identification
What Carbaryl is
Carbaryl is colorless to light tan crystals and is odorless. Its molecular formula is C12H11NO2 and its molecular weight is 201.22 g/mol. It melts at 145 °C.
Under the GHS it carries the signal word Warning. It is classed as hazardous Air Pollutants (HAPs).
Other names for Carbaryl
- carbaryl (ISO)
- 1-naphthyl methylcarbamate
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 |
|---|---|
| H351 | Suspected of causing cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H332 | Harmful if inhaled. |
| H302 | Harmful if swallowed. |
| H400 | Very toxic to aquatic life. |
Precautionary statements: P201, P260, P270, P271, P273, P280, P301, P304, P308, P312, P313, P330, P391, P501
03 · Physical and chemical properties
Carbaryl 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 | Decomposes | decomposes | HSDB |
| Decomposes (NIOSH, 2024) | decomposes | CAMEO | |
| Melting point | 145 °C (293 °F) | HSDB | |
| 142.22 °C (288 °F) | CAMEO | ||
| Density | 1.23 g/cm³ | NIOSH | |
| 1.23 g/cm³ | at 20 °C | CAMEO | |
| 1.228 g/cm³ | at 25 °C | HSDB | |
| Solubility | In water, 110 mg/L at 22 °C | at 22 °C | HSDB |
| 0.01% | NIOSH | ||
| Vapor pressure | 0.00000136 mmHg | at 25 °C | HSDB |
| 0.00004 mmHg | below this value, at 25 °C | NIOSH | |
| Flash point | 197.5 °C (387.5 °F) | range, midpoint shown | ICSC |
| Autoignition temperature | Not flammable (USCG, 1999) | CAMEO | |
| Lower explosive limit (LEL) | Contact with strong oxidizers can cause fire and explosions. | HSDB | |
| Noncombustible Solid, but may be dissolved in flammable liquids. | NIOSH | ||
| Corrosivity | Non-corrosive to metals, packaging materials, and application equipment | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Source notes
Further notes on Carbaryl
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.
Solubility
Soluble in most polar organic solvents; dimethylformamide 400-450, dimethyl sulfoxide 400-450, acetone 200-300, cyclohexanone 200-250, isopropanol 100, xylene 100 (all in g/kg at 25 °C)
Source: HSDB
05 · Handling and storage
Storing and handling Carbaryl
Storage conditions
PESTICIDE STORAGE: Storage should be under lock and key and secure from access by unauthorized persons and children. Storage should be in a cool, dry area away from any heat or ignition source. Do not allow storage in a damp or humid area. Do not stack over 2 pallets high. Move bags carefully so as not to tear or puncture. Do not move from one area to another unless they are securely sealed to prevent dust from escaping. Keep container tightly sealed when not in use. Keep away from any puncture source. Avoid storage near water supplies, food, feed and fertilizer to avoid contamination. Avoid contamination with acids and alkalies. Store in original containers only.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
... Incompatible with alkaline materials such as Bordeaux mixture, lime, and lime sulfur.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
CARBARYL is a carbamate ester. Carbamates are chemically similar to, but more reactive than amides. Like amides they form polymers such as polyurethane resins. Carbamates are incompatible with strong acids and bases, and especially incompatible with strong reducing agents such as hydrides. Flammable gaseous hydrogen is produced by the combination of active metals or nitrides with carbamates. Strongly oxidizing acids, peroxides, and hydroperoxides are incompatible with carbamates. This compound is unstable in an alkaline media. (NTP, 1992). This compound is incompatible with the following: Strong oxidizers, strongly alkaline pesticides (NIOSH, 2024).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Carbaryl in the storage compatibility matrix →