Substance profile
Propoxur
Propoxur is minute crystals and is odorless.
01 · Identification
What Propoxur is
Propoxur is minute crystals and is odorless. Its molecular formula is C11H15NO3 and its molecular weight is 209.24 g/mol. It melts at 87 °C, is soluble in water.
Under the GHS it carries the signal word Danger. It is classed as hazardous Air Pollutants (HAPs).
Other names for Propoxur
- propoxur (ISO)
- 2-isopropyloxyphenyl N-methylcarbamate
- 2-isopropoxyphenyl 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 |
|---|---|
| H301 | Toxic if swallowed. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P270, P273, P301, P310, P330, P391, P501
This page lists only the codes assigned to Propoxur. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
03 · Physical and chemical properties
Propoxur 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 on distillation | decomposes | HSDB |
| Decomposes | decomposes | NIOSH | |
| Decomposes (NIOSH, 2024) | decomposes | CAMEO | |
| Melting point | 87 °C (188.6 °F) | HSDB | |
| 91 °C (195.8 °F) | HSDB | ||
| Density | 1.12 g/cm³ | at 20 °C | HSDB |
| 1.1 g/cm³ | at 20 °C | ICSC | |
| Solubility | Soluble in methanol, acetone, and many organic solvents; slightly soluble in cold hydrocarbons | HSDB | |
| Soluble in most polar solvents | HSDB | ||
| Readily soluble in 2-propanol, dichloromethane, toluene; hardly soluble in n-hexane | HSDB | ||
| Vapor pressure | 0.000007 mmHg | NIOSH | |
| 0.00000968 mmHg | at 20 °C | HSDB | |
| Flash point | 148.89 °C (300 °F) | above this value | NIOSH |
| Lower explosive limit (LEL) | Class IIIB Combustible Liquid: Fl.P. at or above 200 °F. | NIOSH |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Propoxur
Storage conditions
Store in original container, preferably in locked area, away from children, food, feed.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Believed compatible with most insecticides, fungicides, except alkalines.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
PROPOXUR is incompatible with the following: Strong oxidizers, alkalis [Note: Emits highly toxic methyl isocyanate fumes when heated to decomposition.] (NIOSH, 2024).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Propoxur in the storage compatibility matrix →
Safety Data Sheet
Getting an SDS for Propoxur
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 Propoxur 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.
Nearby
Substances next to Propoxur
Keep going: substances starting with P, or search the whole database by name, CAS number, pictogram or signal word.