Crotyl chloride
Crotyl chloride (CAS: 591-97-9), with the linear formula CH3CH=CHCH2Cl and a molecular weight of 90.55 g/mol, is a reactive organic compound. This alkene features a chlorine atom on the allylic carbon, making it valuable in chemical synthesis. It is commonly employed as a building block for introducing the crotyl group in organic chemistry research and industrial applications. Crotyl chloride is supplied by TSS with an assay of approximately 70% GC.
- IUPAC
- cis,trans-1-Chloro-2-butene
- Synonyms
- 1-chloro-2-butenecis,trans-1-Chloro-2-butene
Investigation of Reaction Kinetics
Crotyl chloride has been utilised in studies to investigate the kinetics of reactions between atomic chlorine and various unsaturated aldehydes and ketones at 298K. This research helps probe structure-reactivity relationships in chemical processes.
Synthesis of Organosilanes
This compound serves as a precursor in the preparation of specific organosilanes. For instance, it has been used in the synthesis of (E)-crotyltrichlorosilane, a useful reagent in organic synthesis.
Organic Synthesis Building Block
As an alkene with a reactive allylic chloride, crotyl chloride is a versatile building block. It facilitates the introduction of the crotyl moiety into more complex organic molecules through various coupling and substitution reactions.
| Molecular weight | 90.55 |
|---|---|
| Linear formula | CH3CH=CHCH2Cl |
| Assay | ~70% (GC) |
| Boiling point | 85-86 °C(lit.) |
| Density | 0.923 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.430 |
| Solubility | water: soluble14 g/L at 20 °C |
| Impurities tested | ~30% 3-chloro-1-butene |
| Application | Crotyl chloride has been used:• to investihgate the kinetics of the reactions of atomic chlorine with series of unsaturated aldehydes and ketones at 298K, to probe structure-reactivity relationships1• in the preparation of (E)-crotyltrichlorosilane2 |
Hazard statements
- H225Highly flammable liquid and vapour
- H302Harmful if swallowed
- H314Causes severe skin burns and eye damage
- H317May cause an allergic skin reaction
- H332Harmful if inhaled
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | -12 °C / 10.4 °F |
| Transport (UN / ADR) | UN 2924 8(3) / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,C |
| Risk statements (R) | 11-22-34-43 |
| Safety statements (S) | 16-26-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Crotyl chloride used for?
+
Crotyl chloride is used in chemical synthesis as a building block, for investigating reaction kinetics, and in the preparation of specific organosilanes.
What are the CAS number and formula for Crotyl chloride?
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The CAS number for Crotyl chloride is 591-97-9 and its linear formula is CH3CH=CHCH2Cl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Crotyl chloride with an assay of approximately 70% (GC), with approximately 30% 3-chloro-1-butene as an impurity. This is not represented as USP, BP, or EP grade.
What are the main hazards associated with Crotyl chloride?
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Crotyl chloride is a Danger hazard, flammable (H225), harmful if swallowed (H302), causes severe skin burns and eye damage (H314), may cause an allergic skin reaction (H317), and harmful if inhaled (H332).
How is Crotyl chloride packed and shipped?
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Crotyl chloride is shipped as UN 2924, Hazard Class 8(3), Packing Group II, indicating it is a corrosive liquid, flammable, and environmentally hazardous.
How can I request a quote or sample of Crotyl chloride?
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To request a quote or sample of Crotyl chloride, please contact our sales team through the TSS website or by phone.
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