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Picloram

Also known as: 4-Amino-3,5,6-trichloropicolinic acid, 4-Amino-3,5,6-trichloropyridine-2-carboxylic acid, Tordon, Grazon, ATCP, 3,5,6-Trichloro-4-aminopicolinic acid, 4-Amino-3,5,6-trichloro-2-pyridinecarboxylic acid, Picolinic acid, 4-amino-3,5,6-trichloro-, 4-Aminotrichloropicolinic acid

Picloram (CAS 1918-02-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H3Cl3N2O2 and a molecular weight of 241.459 g/mol. Key properties include a melting point of 200 °C (dec.)(lit.), a boiling point of 420.5±45.0 °C at 760 mmHg, a density of 1.8±0.1 g/cm3 and a flash point of 208.1±28.7 °C. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1918-02-1
Jingsj CID
J-1130923-9
Molecular Formula
C6H3Cl3N2O2
Molecular Weight
241.459 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point200 °C (dec.)(lit.)
Boiling Point420.5±45.0 °C at 760 mmHg
Density1.8±0.1 g/cm3
Flash Point208.1±28.7 °C
Exact Mass239.926010
PSA76.21000
LogP2.94
Vapor Pressure0.0±1.0 mmHg at 25°C
Refractive Index1.677
Additional Property420 mg/L

GHS Safety & Compliance

IrritantSignal word: Warning
  • H319 — Causes serious eye irritation

Activity & Biological Data

Additional Information[1]. Praveen K Kathare , et al. Arabidopsis PIC30 Encodes a Major Facilitator Superfamily Transporter Responsible for the Uptake of Picolinate Herbicides. Plant J. 2020 Apr;102(1):18-33.

Frequently Asked Questions

What is the CAS number of Picloram?

The CAS number of Picloram is 1918-02-1.

What are the molecular formula and molecular weight of Picloram?

Picloram has molecular formula C6H3Cl3N2O2 and molecular weight 241.459 g/mol.

Is Picloram hazardous?

Picloram has GHS signal word Warning and hazard statements H319 — Causes serious eye irritation.

What are the upstream and downstream products of Picloram?

For Picloram, Upstream Products: Aqueous ammonia, 3,4,5,6-Tetrachloropyridine-2-carbonitrile, 4-Amino-3,5,6-trichloro-2-(trichloromethyl)pyridine; Downstream Products: Aminopyralid, 4-Aminopyridine-2-carboxylic acid, Methyl 4-amino-3,5,6-trichloropicolinate.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Picloram (CAS 1918-02-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1130923-9 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.