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Acid Halides & AnhydridesSynthesisAvailable on request

4-Chlorobutyryl chloride, 98%

Synonyms: p-Chlorobutyryl chloride · Butanoyl chloride, 4-chloro- · 4-Chlorobutyroyl chloride · 4-Chlorobutyric acid chloride

CAS No.4635-59-0
FormulaC4H6Cl2O
Mol. weight140.99
Catalogue No.VQ-009101
Purity98%
HSN29156010

4-Chlorobutyryl chloride (CAS 4635-59-0) – acylating agent, Synthesis grade, 98%. C4H6Cl2O, MW 140.99. COA included. Worldwide shipping from Vaqora Chemicals.

Pack sizesPrice on quotation · bulk available
250 g
250 kg
Bulk / custom pack · kg to MT
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Batch COA with every lot
16-section GHS SDS
Export to 120+ countries
DG-compliant packing

About 4-Chlorobutyryl chloride, 98%

4-Chlorobutyryl chloride is an acylating agent in Synthesis grade carrying the CAS registry number 4635-59-0, specified at 98% purity. Formula C4H6Cl2O, molecular weight 140.99 g/mol. Systematically, it is named 4-chlorobutanoyl chloride. It is also known as p-Chlorobutyryl chloride or Butanoyl chloride, 4-chloro-.

In its supplied form it is a colourless to light yellow to light orange clear liquid. Literature values give a boiling point of 173-174 °C and a density of 1.26 g/mL at 25 °C. Keep containers tightly closed in a cool, well-ventilated area away from heat and ignition sources. It carries the GHS signal word “Danger” with 4 hazard statements. Review the Safety Data Sheet before use.

Key uses span pharmaceutical synthesis, fine chemical synthesis and agrochemical formulations. It is used across pharmaceutical manufacturing, academic and industrial research and agrochemical production.

Standard pack sizes are 250 g and 250 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

  • Pharmaceutical synthesis
  • Fine chemical synthesis
  • Agrochemical formulations

Industries

Specifications & identifiers

Chemical identifiers
Product name4-Chlorobutyryl chloride, 98%
Catalogue No.VQ-009101
CAS Number4635-59-0
IUPAC name4-chlorobutanoyl chloride
Molecular formulaC4H6Cl2O
Molecular weight140.99 g/mol
Exact mass139.9796
GradeSynthesis
Purity / assay98%
HSN code29156010
InChIKeyCDIIZULDSLKBKV-UHFFFAOYSA-N
SMILESC(CC(=O)Cl)CCl
PubChem CID78370
Physical properties
Physical formLiquid
AppearanceColourless to light yellow to light orange clear liquid
Boiling point173-174 °C
Density1.26 g/mL at 25 °C
LogP (XLogP3)1.7
H-bond donors / acceptors0 / 1
TPSA17.1 Ų
UN numberUN 3390
Synonymsp-Chlorobutyryl chloride, Butanoyl chloride, 4-chloro-, 4-Chlorobutyroyl chloride, 4-Chlorobutyric acid chloride, 4-Chlorobutanoic acid chloride, gamma-Chlorobutyryl chloride, Butyryl chloride, 4-chloro-, gamma-Chlorobutyroyl chloride, .gamma.-Chlorobutyryl chloride, 4-Chlorobutyl chloride, .gamma.-Chloro-n-butyryl chloride, 4chlorobutyroyl chloride

Safety & hazard information (GHS)

GHS05 Corrosive
Corrosive
GHS06 Toxic
Toxic
GHS07 Harmful / irritant
Harmful / irritant

Signal word: Danger

Hazard statements

  • H290May be corrosive to metals
  • H302Harmful if swallowed
  • H314Causes severe skin burns and eye damage
  • H330Fatal if inhaled

Precautionary statements: P234, P260, P264, P270, P271, P280, P284, P301 + P317, P301 + P330 + P331, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P320, P321, P330, P363, P390, P403 + P233, P405, P406, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Frequently asked questions

What is the CAS number of 4-Chlorobutyryl chloride, 98%?

The CAS Registry Number of 4-Chlorobutyryl chloride, 98% is 4635-59-0. It is also known as p-Chlorobutyryl chloride, Butanoyl chloride, 4-chloro-, 4-Chlorobutyroyl chloride.

What is the molecular formula and molecular weight of 4-Chlorobutyryl chloride, 98%?

4-Chlorobutyryl chloride, 98% has the molecular formula C4H6Cl2O and a molecular weight of 140.99 g/mol. Its IUPAC name is 4-chlorobutanoyl chloride.

Which grade and pack sizes of 4-Chlorobutyryl chloride, 98% can I order?

We supply 4-Chlorobutyryl chloride, 98% in Synthesis (98%) grade, in 250 g, 250 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 4-Chlorobutyryl chloride, 98%?

Yes. Every lot of 4-Chlorobutyryl chloride, 98% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 4-Chlorobutyryl chloride, 98% be shipped internationally?

Yes. 4-Chlorobutyryl chloride, 98% is classified as hazardous (UN 3390), so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.

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Why buyers choose Vaqora

  • Batch-traceable lots with COA
  • R&D packs to multi-tonne supply
  • IATA / IMDG dangerous-goods packing
  • EXW, FOB, CIF, DAP Incoterms
  • Custom synthesis & sourcing
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