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Herbicides

2-Chloropropionic acid

Also known as 2-Chloropropanoic acid, Propanoic acid, 2-chloro-, Propionic acid, 2-chloro-

CAS 598-78-7Formula C3H5ClO2Molar mass 108.52 g/molEC 209-952-3
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant 18 suppliers listed
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2-Chloropropionic acid chemical structure, C3H5ClO2, CAS 598-78-7
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Crystals
Melting point
-12.1 °C
Boiling point
186 °C
Density
1.3 g/cm³
Flash point
107 °C
HS code
291590
Category
Herbicides
UN number
UN 2511
Illustrative photo, closed white HDPE bottles and amber jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is 2-Chloropropionic acid?

Plain description, key identifiers and synonyms

2-chloropropionic acid appears as a pale liquid with a slight odor. Sinks in and mixes with water. Only aluminum, stainless steel or steel covered with a protective lining or coating may contact the liquid or vapor.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-chloropropanoic acid
CAS number
598-78-7 CAS number cross-checkedOther or deprecated CAS: 28554-00-9, 62138-52-7
EC number
209-952-3
Molecular formula
C3H5ClO2
UNII
ADV1WUE1NB
MDL number
MFCD00004224
InChIKey
GAWAYYRQGQZKCR-UHFFFAOYSA-N
InChI
InChI=1S/C3H5ClO2/c1-2(4)3(5)6/h2H,1H3,(H,5,6)
SMILES (canonical and isomeric)
CC(C(=O)O)Cl

Synonyms

  • 2-Chloropropanoic acid
  • Propanoic acid, 2-chloro-
  • Propionic acid, 2-chloro-
  • alpha-Chloropropionic acid
  • alpha-Monochloropropionic acid
  • Propionic acid, alpha-chloro-
  • (rs)-2-Chloropropionic acid
  • R(+)-2-Chloropropionic acid
  • Propanoic acid, chloro-
  • Chloropropionic acid
  • (+/-)-2-Chloropropanoic acid
  • (+)-2-chloropropionic acid
  • (+/-)-2-Chloropropionic acid
  • CH3CHClCOOH
  • 2-chloroproprionic acid
  • 2-chloro-propionic acid
  • alpha-chloro-propionic acid
  • 0-02-00-00248 (Beilstein Handbook Reference)
  • S(-)-2-Chloropropionic acid
  • 2-Chloropropionic acid, 92%
  • (RS)-(+)-2-chloropropionic acid
  • (rs)-2-Chloropropanoic acid
  • (+/-)-alpha-chloropropanoic acid
  • alpha-chloropropionic acid, (+/-)-
  • 2-Chloropropionic acid [UN2511] [Corrosive]

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

Appearance
Crystalsexp.
Odour
Pungentexp.
Melting point
-12.1 °Cexp.
Boiling point
186 °Cexp.
Density
1.3 g/cm³exp.
Flash point
107 °Cexp.
Autoignition temperature
500 °Cexp.
Solubility
SOL IN ALL PROP IN WATER, ALC, ETHER, SOL IN ACETONEexp.
Vapour pressure
0.13 torr @ 20 °Cexp.

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
108.52 g/molcalc.
Exact mass
107.9978 Dacalc.
LogP (octanol/water)
0.7calc.
Topological polar surface area
37.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
1calc.
Heavy atoms
6calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.67calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant
100NFPA 704 rating

Hazard statements

  • H302Harmful if swallowed.
  • H314Causes severe skin burns and eye damage.
Precautionary statements (15)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P363Wash contaminated clothing before reuse.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2511
Transport hazard class
8
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

2-Chloropropionic acid suppliers

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

All 18 suppliers
18 of 18 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

18 suppliers in 6 countries

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2-Chloropropionic acid price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Intermediate for weed killers.

Chemical intermediate for dalapon, silvex & mecoprop herbicides.

Chemical intermediate for dichlorprop & benzoylprop-ethyl herbicides.

How it is made

Reaction of propanoic acid with chlorine

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 607-139-00-1

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 2-Chloropropionic acid is traded under.

HS 2915.90Indicative HS code

Saturated acyclic monocarboxylic acids, anhydrides, halides, peroxides, peroxyacids and halogenated…

World exports in 2024
$3.42B
+5.6% vs 2023, imports $3.55B
2019 to 2024
Top exporters
  1. Indonesia15.9%
  2. Germany13.0%
  3. Malaysia12.4%
Top importers
  1. China14.4%
  2. Netherlands11.7%
  3. United States11.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for 2-Chloropropionic acid is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2-Chloropropionic acid, based on the data on this page

What is 2-Chloropropionic acid?

2-chloropropionic acid appears as a pale liquid with a slight odor. Sinks in and mixes with water. Only aluminum, stainless steel or steel covered with a protective lining or coating may contact the liquid or vapor.

What is the CAS number of 2-Chloropropionic acid?

The CAS registry number of 2-Chloropropionic acid is 598-78-7. Other or deprecated CAS numbers: 28554-00-9, 62138-52-7.

What is the molecular formula and weight of 2-Chloropropionic acid?

The molecular formula of 2-Chloropropionic acid is C3H5ClO2 and its molar mass is 108.52 g/mol.

What is 2-Chloropropionic acid used for?

Intermediate for weed killers. Chemical intermediate for dalapon, silvex & mecoprop herbicides. Chemical intermediate for dichlorprop & benzoylprop-ethyl herbicides.

Is 2-Chloropropionic acid hazardous?

2-Chloropropionic acid carries the GHS signal word "Danger". Main hazards: harmful if swallowed, causes severe skin burns and eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Chloropropionic acid?

2-Chloropropionic acid is usually classified under HS code 291590 (Saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2-Chloropropionic acid?

CompoundList lists 18 suppliers of 2-Chloropropionic acid in China, Germany, India, Canada and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy 2-Chloropropionic acid in India?

2 suppliers in India list 2-Chloropropionic acid on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of 2-Chloropropionic acid?

Suppliers quote 2-Chloropropionic acid 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 2-Chloropropionic acid

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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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