1-Bromo-4-pentene (CAS NO.: 1119-51-3)
CAS NO.: 1119-51-3
Content:98.00%
Application: Used in the stereoselective synthesis of 7α-(3-carboxypropyl) estradiol, preparation of thioacetates like those in sialic acid derivatives, and recent syntheses of DL-histrionicotoxin and benzophenone-containing fatty acids. etc..
Product Overview
1-Bromo-4-pentene (also known as 5-Bromo-1-penteneor 4-Pentenyl bromide) CAS No.: 1119-51-3 , with the chemical formula C₅H₉Br and a molecular weight of 149.03 g/mol. It is a clear colorless to light yellow liquid. This compound belongs to the class of alkyl halides with an alkene group and is primarily used in organic synthesis and as a reagent, though it is subject to safety regulations due to its flammable and irritant properties.
Properties
5-Bromo-1-pentene exhibits the following key physical and chemical properties:
- Physical State: Liquid (at room temperature).
- Appearance: Clear colorless to light yellow liquid.
- Odor: Not specified.
- Melting Point: -106.7 °C (estimate).
- Boiling Point: 126-127 °C at 765 mmHg (lit.).
- Density: 1.258 g/mL at 25 °C (lit.).
- Solubility: Insoluble in water; soluble in organic solvents like chloroform, ethanol, and ether.
- Stability: Stable under normal conditions; incompatible with strong oxidizing agents; flammable.
- Toxicity: Moderately toxic; causes skin irritation, eye irritation, and respiratory irritation; may cause dizziness, nausea, and central nervous system effects upon inhalation.
Applications
The primary applications of 5-bromo-1-pentene include:
- Organic Synthesis Intermediate: Used in the stereoselective synthesis of 7α-(3-carboxypropyl) estradiol, preparation of thioacetates like those in sialic acid derivatives, and recent syntheses of DL-histrionicotoxin and benzophenone-containing fatty acids.
- Reagent: Employed in the production of pharmaceuticals, agrochemicals, fragrances, polymers, and as an analytical reagent.
- Other: Serves as a versatile building block in organic chemistry for introducing alkyl chains with functional groups.
Classification
The following table outlines the classification of 5-bromo-1-pentene based on chemical properties, uses, and regulations:
| Classification Type | Specific Category | Description |
|---|---|---|
| Chemical Class | Alkyl Halide (Bromoalkene) | An unsaturated bromoalkane, reactive in nucleophilic substitution and addition reactions. |
| Usage Class | Organic Synthesis Reagent/Intermediate | Primarily used as a reagent and intermediate in chemical synthesis. |
| Hazard Class | Flammable Liquid (UN 1993); Irritant | Flammable (H225, flash point ~31 °C); skin irritant (H315), eye irritant (H319), respiratory irritant (H335); Packing Group III. |
| Regulatory Class | Controlled Chemical (REACH, TSCA) | Listed under EU REACH and US TSCA; subject to environmental and safety controls (WGK 3 in Germany). |
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Frequently Asked Questions — 1-Bromo-4-pentene (CAS NO.: 1119-51-3)
What is 1-Bromo-4-pentene (CAS NO.: 1119-51-3) used for?
1-Bromo-4-pentene (CAS NO.: 1119-51-3) (1-Bromo-4-pentene (CAS NO.: 1119-51-3)) is an organic pigment supplied by Honor Pigments for printing inks, industrial coatings, plastics masterbatch, and textile printing. ISO 9001 certified quality with batch-to-batch consistency.
Is 1-Bromo-4-pentene (CAS NO.: 1119-51-3) suitable for water-based applications?
Yes. 1-Bromo-4-pentene (CAS NO.: 1119-51-3) can be formulated for water-based ink and coating systems when combined with proper dispersing and wetting agents. Contact Honor Pigments for application-specific grade recommendations.
What technical data is available for 1-Bromo-4-pentene (CAS NO.: 1119-51-3)?
Full technical datasheets including heat resistance, light fastness, oil absorption, density, pH value, and particle size distribution are available upon request. Honor Pigments maintains 3-year batch records for QC traceability.
How does Honor Pigments ensure batch consistency for 1-Bromo-4-pentene (CAS NO.: 1119-51-3)?
Every batch undergoes color strength, shade, dispersibility, and particle size testing against internal standards. Results are documented per ISO 9001 procedures and available with each shipment.
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