Triclopyr

三氯吡氧乙酸

Also known as: (3,5,6-trichloro-2-pyridinyl)oxyacetic acid, 3,5,6-trichloro-2-pyridyloxyacetic acid, 2-[(3,5,6-trichloro-2-pyridinyl)oxy]acetic acid, Garlon, Redeem, Remedy, Dowco 233, Turflon, NSC 190671

Triclopyr (CAS 55335-06-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H4Cl3NO3 and a molecular weight of 256.471 g/mol. It is also known as (3,5,6-trichloro-2-pyridinyl)oxyacetic acid, 3,5,6-trichloro-2-pyridyloxyacetic acid and 2-[(3,5,6-trichloro-2-pyridinyl)oxy]acetic acid. Key properties include a melting point of 148-150°C, a boiling point of 359.1±37.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 171.0±26.5 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 55335-06-3
Jingsj CID: J-6343-6
Molecular Formula: C₇H₄Cl₃NO₃
Chinese Name: 三氯吡氧乙酸
Molecular Weight: 256.471 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	148-150°C
Boiling Point	359.1±37.0 °C at 760 mmHg
Density	1.7±0.1 g/cm3
Flash Point	171.0±26.5 °C
Exact Mass	254.925674
PSA	59.42000
LogP	2.98
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.591

GHS Safety & Compliance

IrritantSignal word: Warning

H302 — Harmful if swallowed

Activity & Biological Data

Additional Information	[1]. Tejaswini P Reddy, et al. Toxicity of neurons treated with herbicides and neuroprotection by mitochondria-targeted antioxidant SS31. Int J Environ Res Public Health. 2011 Jan;8(1):203-21. [2]. C Timchalk, et al. Pharmacokinetics of triclopyr (3,5,6-trichloro-2-pyridinyloxyacetic acid) in the beagle dog and rhesus monkey: perspective on the reduced capacity of dogs to excrete this organic acid relative to the rat, monkey, and human. Toxicol Appl Pharmacol. 1997 Jun;144(2):268-78.

Additional Information

[1]. Tejaswini P Reddy, et al. Toxicity of neurons treated with herbicides and neuroprotection by mitochondria-targeted antioxidant SS31. Int J Environ Res Public Health. 2011 Jan;8(1):203-21. [2]. C Timchalk, et al. Pharmacokinetics of triclopyr (3,5,6-trichloro-2-pyridinyloxyacetic acid) in the beagle dog and rhesus monkey: perspective on the reduced capacity of dogs to excrete this organic acid relative to the rat, monkey, and human. Toxicol Appl Pharmacol. 1997 Jun;144(2):268-78.

Customs & Trade Information

HS Code	2933399028
Summary	2933399028 2-((3,5,6-trichloropyridin-2-yl)oxy)acetic acid。supervision conditions:s(import or export registration certificate for pesticides)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.5%。general tariff:20.0%

Frequently Asked Questions

What is the CAS number of Triclopyr?

The CAS number of Triclopyr is 55335-06-3.

What are the molecular formula and molecular weight of Triclopyr?

Triclopyr has molecular formula C7H4Cl3NO3 and molecular weight 256.471 g/mol.

Is Triclopyr hazardous?

Triclopyr has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

What are the upstream and downstream products of Triclopyr?

For Triclopyr, Upstream Products: Triclopyr-methyl, Ethyl diazoacetate, 3,5,6-Trichloro-2-pyridinol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Triclopyr (CAS 55335-06-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6343-6 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.