Description

4-Bromotoluene (CAS No. 106-38-7), also known as p-Bromotoluene or 1-Bromo-4-methylbenzene, is a high-purity aromatic organic compound with the molecular formula C₇H₇Br. This colorless to pale yellow liquid is widely utilized in synthetic organic chemistry, pharmaceutical intermediates, and material science research. With a boiling point of 184-185°C and a melting point of 26-28°C, it exhibits excellent solubility in organic solvents like ethanol, ether, and benzene while being insoluble in water. Packaged under inert conditions to ensure stability, our 4-Bromotoluene is rigorously tested via GC/HPLC to meet ≥98% purity standards, making it ideal for precise laboratory applications. Suitable for use as a versatile building block in Grignard reactions, Suzuki couplings, and other cross-coupling methodologies.

Properties

• CAS Number: 106-38-7
• Complexity: 62.8
• IUPAC Name: 1-bromo-4-methyl-benzene
• InChI: InChI=1S/C7H7Br/c1-6-2-4-7(8)5-3-6/h2-5H,1H3
• InChI Key: ZBTMRBYMKUEVEU-UHFFFAOYSA-N
• LogP: log Kow = 3.42
• Exact Mass: 169.97311
• Molecular Formula: C7H7Br
• Molecular Weight: 171.03
• SMILES: CC1=CC=C(C=C1)Br
• Monoisotopic Mass: 169.97311
• Physical Description: Crystals, clear pale yellow liquid.
• Color/Form: Crystals from absolute alcohol
• Boiling Point: 363 °F at 760 mmHg
• Melting Point: 83.3 °F
• Flash Point: 185 °F
• Solubility: less than 1 mg/mL at 75 °F
• Density: 1.399 at 68 °F – Denser than water; will sink
• Vapor Density: 5.9 – Heavier than air; will sink
• Vapor Pressure: 1 mmHg at 50.5 °F ; 5 mmHg at 117.5 °F; 10 mmHg at 142.0 °F
• Heat of Vaporization: 10,076.2 gcal/gmole
• Refractive Index: INDEX OF REFRACTION: 1.5490 AT 20 °C/D
• Synonyms: 4-BROMOTOLUENE, 106-38-7, p-Bromotoluene, 1-Bromo-4-methylbenzene, Benzene, 1-bromo-4-methyl-, Toluene, 4-bromo-, NSC 6531, CCRIS 5983, HSDB 6015, EINECS 203-391-8, UNII-9E349GQ7EU, DTXSID7024661, AI3-28596, PARA BROMOTOLUENE, NSC-6531, 4-BROMOTOLUENE [HSDB], DTXCID804661, pBromotoluene, pTolyl bromide, Toluene, pbromo, 4Tolyl bromide, Toluene, 4bromo, pMethylbromobenzene, 4Methylbromobenzene, 1Bromo4methylbenzene, 1Methyl4bromobenzene, 4Bromo1methylbenzene, 4Methyl1bromobenzene, pMethylphenyl bromide, 4Methylphenyl bromide, Benzene, 1bromo4methyl, AI328596, inchi=1/c7h7br/c1-6-2-4-7(8)5-3-6/h2-5h,1h, zbtmrbymkueveu-uhfffaoysa-n, 4-Methylbromobenzene, p-Tolyl bromide, 4-Methylphenyl bromide, Toluene, p-bromo-, 1-Methyl-4-bromobenzene, p-Methylphenyl bromide, 4-Tolyl bromide, p-Methylbromobenzene, 4-Bromo-1-methylbenzene, Parabromotoluene, 4-Methyl-1-bromobenzene, 1-bromo-4-methyl-benzene, MFCD00000109, 1-bromanyl-4-methyl-benzene, 9E349GQ7EU, p-tolylbromide, 4- bromotoluene, 4-bromo toluene, 4-Bromo-toluene, p-methylphenylbromide, 4-methyl-bromobenzene, Bromo-4-methyl-benzene, 4-Bromotoluene, 98%, para-methylphenyl bromide, SCHEMBL808, SCHEMBL25407, SCHEMBL96550, SCHEMBL192703, SCHEMBL193222, SCHEMBL1800566, CHEMBL1377077, NSC6531, STR01413, Tox21_200969, SBB040884, STL483071, AKOS000118945, FB57596, NCGC00090876-01, NCGC00090876-02, NCGC00258522-01, CAS-106-38-7, DB-002848, 4-Bromotoluene, puriss., >=99.0% (GC), B0661, NS00023409, ST50214480, EN300-19369, Q27272425, F1908-0065, C5O

Application

4-Bromotoluene serves as a key intermediate in the synthesis of pharmaceuticals, agrochemicals, and liquid crystals. It is frequently employed in palladium-catalyzed cross-coupling reactions (e.g., Suzuki-Miyaura) to construct biaryl scaffolds. Researchers also utilize it to introduce bromomethyl groups into molecular systems for further functionalization. Its stability and reactivity make it valuable in organometallic chemistry and polymer research.

Safety and Hazards

GHS Hazard Statements

• H302 (78.7%): Harmful if swallowed [Warning Acute toxicity, oral]
• H315 (95.1%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (31.1%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (13.1%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Acute Tox. 4 (78.7%)
• Skin Irrit. 2 (95.1%)
• Eye Irrit. 2A (31.1%)
• STOT SE 3 (13.1%)

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