Trichlorfon
A phosphonic ester that is dimethyl phosphonate in which the hydrogen atom attched to the phosphorous is substituted by a 2,2,2-trichloro-1-hydroxyethyl group. — ChEBI
Safety documents & references
1 indexed referencesFind a product-specific SDS
Safety guides and government classification records are not a manufacturer’s SDS. Match supplier, product number, concentration, physical form, region and revision before using a document.
Identity & molecular properties
Source-linked values| CAS number | 52-68-6 | ChEBI ↗ |
| Molecular formula | C4H8Cl3O4P | ChEBI ↗ |
| Molar mass | 257.437 g/mol | ChEBI ↗ |
| Monoisotopic mass | 255.92258 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:6908 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 257.43 g/mol | PubChem ↗ |
| Exact mass | 255.922579 Da | PubChem ↗ |
| Computed XLogP | 0.5 | PubChem ↗ |
| Topological polar surface area (Ų) | 55.8 | PubChem ↗ |
| H-bond donors | 1 | PubChem ↗ |
| H-bond acceptors | 4 | PubChem ↗ |
| Rotatable bonds | 3 | PubChem ↗ |
PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.
Names & structural identifiers
Copy any identifiertrichlorfondimethyl (2,2,2-trichloro-1-hydroxyethyl)phosphonateNFACJZMKEDPNKN-UHFFFAOYSA-NCOP(=O)(OC)C(O)C(Cl)(Cl)ClInChI=1S/C4H8Cl3O4P/c1-10-12(9,11-2)3(8)4(5,6)7/h3,8H,1-2H3Names & synonyms
Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.
Classification & relationships
ChEBI ontologyRoles recorded in ChEBI
Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.
Safety classification · Japan
NITE / Japanese governmentDimethyl 2,2,2-trichloro-1-hydroxyethylphosphonate [tichlorfon or DEP] · H27-B-013/C-034B_P
| Endpoint | Reported classification |
|---|---|
| Acute toxicity （Oral） | Category 4 |
| Acute toxicity （Inhalation: Dusts and mists） | Category 3 |
| Serious eye damage/eye irritation | Category 2A |
| Skin sensitization | Category 1 |
| Germ cell mutagenicity | Category 1B |
| Reproductive toxicity | Category 1B |
Selected source-reported endpoints. Other endpoints, rationales and conditions remain in the original classification. Missing or unlisted information does not mean non-hazardous. This is not a global classification or transport decision.
Read the original NITE classificationMass ↔ amount of substance
Calculated from sourced massUses 257.437 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Elemental composition
Theoretical mass fractionsClOCPHCalculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.
Research & patent references
Selected source associationsSources & record history
Checked 27 Sep 2026Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0
PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.