Description

2-Bromopentane (CAS No. 107-81-3) is a high-purity halogenated alkane with the molecular formula C₅H₁₁Br, widely utilized in organic synthesis and pharmaceutical research. This clear, colorless to pale yellow liquid exhibits a characteristic odor and is highly soluble in organic solvents such as ethanol, ether, and chloroform. With a boiling point of approximately 117-118°C and a density of 1.208 g/mL at 25°C, it is a versatile intermediate for nucleophilic substitution reactions, Grignard reagent preparation, and alkylation processes. Our 2-Bromopentane is rigorously tested for purity (≥98% by GC) and is supplied in amber glass bottles under inert gas to ensure stability. Ideal for laboratories requiring precise and reliable reagents, this product is stored under recommended conditions to maintain optimal quality.

Properties

• CAS Number: 107-81-3
• Complexity: 27.1
• IUPAC Name: 2-bromopentane
• InChI: InChI=1S/C5H11Br/c1-3-4-5(2)6/h5H,3-4H2,1-2H3
• InChI Key: LGAJYTCRJPCZRJ-UHFFFAOYSA-N
• Exact Mass: 150.00441
• Molecular Formula: C5H11Br
• Molecular Weight: 151.04
• SMILES: CCCC(C)Br
• Monoisotopic Mass: 150.00441
• Physical Description: 2-bromopentane appears as a colorless to yellow-colored liquid with a strong odor. Flash point 90 °F. Slightly denser than water and insoluble in water. Vapors heavier than air. May irritate skin and eyes. In high concentrations the vapors may be narcotic.
• Boiling Point: 243 °F at 760 mmHg
• Melting Point: -140 °F
• Flash Point: 69 °F
• Density: 1.208 at 68 °F – Denser than water; will sink
• Vapor Pressure: 21.3 [mmHg]
• Synonyms: 2-BROMOPENTANE, Pentane, 2-bromo-, 2-Pentyl bromide, NSC 7896, EINECS 203-521-3, UN2343, BRN 1718829, DTXSID90870456, 4-01-00-00312 (Beilstein Handbook Reference), UN 2343, 2-BROMOPENTANE, (FLAMMABLE LIQUID), 2-BROMOPENTANE, [FLAMMABLE LIQUID], 2Pentyl bromide, 2-amyl bromide, Pentane, 2bromo, 2-PENTYLBROMIDE, (+-)-2-BROMOPENTANE, DTXCID10818178, (.+-.)-2-BROMOPENTANE, 203-521-3, lgajytcrjpczrj-uhfffaoysa-n, 107-81-3, (+/-)-2-Bromopentane, 130321-66-3, 1-methylbutyl bromide, MFCD00000160, sec-amyl bromide, 2-bromo-pentane, 2-bromanylpentane, 2-Bromopentane, 95%, SCHEMBL42637, SCHEMBL83799, SCHEMBL83800, 2-Bromopentane (high purity), SCHEMBL468490, SCHEMBL1766439, SCHEMBL7869291, SCHEMBL7871038, NSC7896, WLN: EY3 & 1, NSC-7896, BR1101, AKOS009157296, BS-22426, B0232, NS00041139, EN300-98886, 2-Bromopentane [UN2343] [Flammable liquid], 2-Bromopentane, contains ~12% 3-Bromopentane, A801760

Application

2-Bromopentane is commonly employed as a key alkylating agent in the synthesis of complex organic compounds, including pharmaceuticals and agrochemicals. It serves as a precursor in the preparation of Grignard reagents (2-pentylmagnesium bromide), which are pivotal in carbon-carbon bond-forming reactions. Researchers also utilize it in nucleophilic substitution reactions to introduce the pentyl group into target molecules. Additionally, it finds applications in material science for modifying polymer chains and in analytical chemistry as a reference standard.

Safety and Hazards

GHS Hazard Statements

• H225 (70.6%): Highly Flammable liquid and vapor [Danger Flammable liquids]
• H226 (29.4%): Flammable liquid and vapor [Warning Flammable liquids]
• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (95.6%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (66.2%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, and P501

Hazard Classes and Categories

• Flam. Liq. 2 (70.6%)
• Flam. Liq. 3 (29.4%)
• Skin Irrit. 2 (100%)
• Eye Irrit. 2 (95.6%)
• STOT SE 3 (66.2%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.