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Agrochemicals

Nitrapyrin

Also known as 2-Chloro-6-(trichloromethyl)pyridine, N-Serve, Dowco-163

CAS 1929-82-4Formula C6H3Cl4NMolar mass 230.91 g/molEC 217-682-2
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment 19 suppliers listed
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Nitrapyrin chemical structure, C6H3Cl4N, CAS 1929-82-4
2D chemical structure

Key facts

What buyers check first

All properties
Physical form
Crystals
Melting point
63 °C
Boiling point
136 °C
Density
Relative density of the vapour/air-mixture at 20 °C (air = 1): 1.0
Flash point
100 °C
HS code
293339
Category
Agrochemicals
UN number
UN 2811
Illustrative photo, drums, an IBC tote and sacks in a chemical warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Nitrapyrin?

Plain description, key identifiers and synonyms

Nitrapyrin is a chloropyridine that is 2-chloropyridine which is substituted by a trichloromethyl group at position 6. It is a nitrification inhibitor that is co-applied with nitrogen fertilizer in agroecosystems. It has a role as a nitrification inhibitor, an antibacterial agent and an agrochemical.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-chloro-6-(trichloromethyl)pyridine
CAS number
1929-82-4 CAS number cross-checked
EC number
217-682-2
Molecular formula
C6H3Cl4N
UNII
8PCE86U01W
MDL number
MFCD00072500
InChIKey
DCUJJWWUNKIJPH-UHFFFAOYSA-N
InChI
InChI=1S/C6H3Cl4N/c7-5-3-1-2-4(11-5)6(8,9)10/h1-3H
SMILES (canonical and isomeric)
C1=CC(=NC(=C1)Cl)C(Cl)(Cl)Cl

Synonyms

  • 2-Chloro-6-(trichloromethyl)pyridine
  • N-Serve
  • Dowco-163
  • N-Serve nitrogen stabilizer
  • Pyridine, 2-chloro-6-(trichloromethyl)-
  • Nitrapyrine
  • alpha,alpha,alpha,6-tetrachloro-2-picoline
  • 2-chloro-6-trichloromethylpyridine
  • 6-chloro-2-(trichloromethyl)pyridine
  • Nitrapyrine [ISO-French]
  • 2-Chloro-6-trichloromethyl pyridine
  • 5-20-05-00500 (Beilstein Handbook Reference)
  • 2-chloro-6-trichloromethylpyridin
  • 2-chloro-6(trichloromethyl)pyridine
  • 6-chloro-2-trichloromethyl pyridine
  • 2 -chloro-6-(trichloromethyl)pyridine
  • Nitrapyrin, PESTANAL(R), analytical standard
  • 2-Chloro-6-(trichloromethyl)pyridine, >=98%
  • 2-Picoline, alpha,alpha,alpha,6-tetrachloro-

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Crystalsexp.
Melting point
63 °Cexp.
Boiling point
136 °Cexp.
Density
Relative density of the vapour/air-mixture at 20 °C (air = 1): 1.0exp.
Flash point
100 °Cexp.
Solubility
Solubility in water: noneexp.
Vapour pressure
Vapor pressure, Pa at 23 °C:exp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
230.91 g/molcalc.
Exact mass
228.902 Dacalc.
LogP (octanol/water)
3.56calc.
Topological polar surface area
12.89 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
11calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.17calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccncc1

c1ccncc1

1 ring, 6 atoms, the Pyridine ring system.

118,162 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (7)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P273Avoid release to the environment.
  • P301 + P317If swallowed: Get medical help.
  • P330Rinse mouth.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2811
Transport hazard class
9
Packing group
III

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Nitrapyrin suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 19 suppliers
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Where suppliers are based

19 suppliers in 5 countries

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Nitrapyrin price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Intermediate.

Use classes: Nitrogen stabilizers.

Roles

  • agrochemical
  • antibacterial agent
  • antimicrobial agent
  • nitrification inhibitor

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 006-057-00-8

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Nitrapyrin is traded under.

HS 2933.39Indicative HS code

Heterocyclic compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure…

World exports in 2024
$9.16B
−17.9% vs 2023, imports $10.6B
2019 to 2024
Top exporters
  1. China21.5%
  2. India * partner reported12.3%
  3. Ireland11.6%
Top importers
  1. Germany14.2%
  2. United States12.8%
  3. Brazil10.1%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Nitrapyrin is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Nitrapyrin, based on the data on this page

What is Nitrapyrin?

Nitrapyrin is a chloropyridine that is 2-chloropyridine which is substituted by a trichloromethyl group at position 6. It is a nitrification inhibitor that is co-applied with nitrogen fertilizer in agroecosystems. It has a role as a nitrification inhibitor, an antibacterial agent and an agrochemical.

What is the CAS number of Nitrapyrin?

The CAS registry number of Nitrapyrin is 1929-82-4.

What is the molecular formula and weight of Nitrapyrin?

The molecular formula of Nitrapyrin is C6H3Cl4N and its molar mass is 230.91 g/mol.

What is Nitrapyrin used for?

Industrial uses: Intermediate. Use classes: Nitrogen stabilizers.

Is Nitrapyrin hazardous?

Nitrapyrin carries the GHS signal word "Warning". Main hazards: harmful if swallowed, toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Nitrapyrin?

Nitrapyrin is usually classified under HS code 293339 (Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Nitrapyrin?

CompoundList lists 19 suppliers of Nitrapyrin in China, United States, Hong Kong, Netherlands and 1 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Nitrapyrin?

Suppliers quote Nitrapyrin on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Nitrapyrin

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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