Home/Chemicals/1918-00-9

Chemical substance record

Dicamba

1918-00-9C₈H₆Cl₂O₃221.039 g/mol

Organic/Inorganic Small MoleculeChEBI source record

A methoxybenzoic acid that is O-methylsalicylic acid substituted by chloro groups at positions 3 and 6. — ChEBI

Safety references

Safety documents & references

Supplier matching matters

Find the safety document for your specific supplier, product number and grade.

Find a product-specific SDS

Search SDS PDFs Sigma-Aldrich Thermo Fisher

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	1918-00-9	ChEBI ↗
Molecular formula	C₈H₆Cl₂O₃	ChEBI ↗
Molar mass	221.039 g/mol	ChEBI ↗
Monoisotopic mass	219.9694 Da	ChEBI ↗
Formal charge	0	ChEBI ↗
ChEBI identifier	CHEBI:81856	ChEBI ↗

Names & structural identifiers

Copy any identifier

Source preferred name

dicamba

IUPAC name

3,6-dichloro-2-methoxybenzoic acid

InChIKey

IWEDIXLBFLAXBO-UHFFFAOYSA-N

SMILES

COc1c(Cl)ccc(Cl)c1C(=O)O

InChI

InChI=1S/C8H6Cl2O3/c1-13-7-5(10)3-2-4(9)6(7)8(11)12/h2-3H,1H3,(H,11,12)

Names & synonyms

3,6-dichloro-2-methoxybenzoic acid

Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.

Classification & relationships

ChEBI ontology

dichlorobenzeneChEBI parent class · 23697 ↗methoxybenzoic acidChEBI parent class · 25238 ↗

carboxylic acid ether organochlorine compound organic molecular entity

Roles recorded in ChEBI

herbicidesynthetic auxinagrochemicalxenobioticenvironmental contaminant

Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.

Mass ↔ amount of substance

Calculated from sourced mass

Amount

Input unit

Equivalent amount

0.00452409 mol

Uses 221.039 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions

C

Carbon · 8 atoms

43.47%

Cl

Chlorine · 2 atoms

32.08%

O

Oxygen · 3 atoms

21.71%

H

Hydrogen · 6 atoms

2.74%

Calculated 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 associations

Direct and indirect effects of the synthetic-auxin herbicide dicamba on two lepidopteran species. ↗Environmental entomology · 2013 Jun · PMID 23726069

Clinical characteristics of patients after dicamba herbicide ingestion. ↗Clinical toxicology (Philadelphia, Pa.) · 2014 Jan · PMID 24351123

US2014329681 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.

Search PubMed Google Scholar

Sources & record history

Checked 27 Sep 2026

Identity, formula, mass, synonyms & ontologyEMBL-EBI ChEBI · CHEBI:81856

Release 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.

How this record was assembled Suggest a correction