How is 3-Bromo-3-methylpentane distinguished from other tert-hexyl bromides?

Use CAS 25346-31-0 and a resolving GC method. The specification should limit constitutional isomers, alkene elimination products and residual starting alcohol rather than relying on the common name alone.

Which 3-Bromo-3-methylpentane controls matter for reaction performance?

Agree GC assay, isomer profile, acidity or HBr, water and alkene impurities. Because substitution and elimination can compete, qualify the batch under the actual process conditions.

Why is an SN2 test unsuitable for qualifying 3-Bromo-3-methylpentane?

The brominated carbon is tertiary and sterically inaccessible to normal SN2 displacement. Ionization or elimination may dominate instead, so qualify the material in representative reaction conditions and control structurally related bromides rather than relying on an SN2 screen.

3-Bromo-3-methylpentane CAS 25346-31-0

3-Bromo-3-methylpentane , CAS 25346-31-0 and EC 246-878-0 , is a tertiary alkyl bromide with molecular formula C6H13Br and molecular weight 165.07 g/mol. It is a constitutional isomer of other tertiary hexyl bromides and should not be treated as identical to 2-bromo-2-methylpentane. Its reaction behavior commonly involves ionization and substitution/elimination competition, so GC assay, alkene impurities, acidity, water and actual reaction selectivity are key purchase controls.

CAS: 25346-31-0
Synonyms: 3-Bromo-3-methylpentane, 3-Methyl-3-bromopentane, 3-Methylpentan-3-yl bromide
Einecs: 246-878-0
Molecular Formula: C₆H₁₃Br
Grade: Confirm identity, assay method, water or residual solvents, product-specific impurities and physical form against the current COA; no end-use grade is assumed.
Package: State required quantity and destination; confirm the current container, light or moisture protection, net weight, storage conditions and transport requirements against the current COA and SDS.

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Product Description

1 Identity and physicochemical profile

2 Applications and grade selection

3 Storage and handling

4 Safety, documentation and procurement

Identity and physicochemical profile

Item	Technical guidance
Product identity	3-Bromo-3-methylpentane
CAS / EC	25346-31-0 / 246-878-0
Formula / molecular weight	C₆H₁₃Br / 165.07 g/mol
Reaction character	Tertiary alkyl bromide with condition-dependent ionization, substitution and elimination
Key purchase controls	Identity, GC assay, constitutional isomers, alkene products, residual alcohol or hydrocarbons, acidity or HBr, water and color

Applications and grade selection

3-Bromo-3-methylpentane may be evaluated in tertiary-alkylation, solvolysis, elimination and mechanistic synthesis. It is not a conventional SN2 reagent. Solvent, nucleophile or base, temperature and water can shift product distribution substantially.

Distinguish it analytically from 2-bromo-2-methylpentane and other C6H13Br isomers.
Set limits for alkenes, residual alcohol, acidity, water and route-relevant by-products.
Compare substitution-to-elimination ratio and final-product quality in the buyer’s reaction.

Storage and handling

Keep tightly closed in compatible packaging away from heat, ignition sources, moisture, bases and oxidizers under the current SDS. Monitor color and acidity during the qualified storage period.

Safety, documentation and procurement

Handle as a flammable, reactive organobromine intermediate using ventilation, suitable personal protection and ignition controls. Procurement should specify analytical limits, reaction, quantity, package, destination and transport documents.

FAQ - Technical & Supply Chain

Q:
How is 3-Bromo-3-methylpentane distinguished from other tert-hexyl bromides?

A: Use CAS 25346-31-0 and a resolving GC method. The specification should limit constitutional isomers, alkene elimination products and residual starting alcohol rather than relying on the common name alone.
Q:
Which 3-Bromo-3-methylpentane controls matter for reaction performance?

A: Agree GC assay, isomer profile, acidity or HBr, water and alkene impurities. Because substitution and elimination can compete, qualify the batch under the actual process conditions.
Q:
Why is an SN2 test unsuitable for qualifying 3-Bromo-3-methylpentane?

A: The brominated carbon is tertiary and sterically inaccessible to normal SN2 displacement. Ionization or elimination may dominate instead, so qualify the material in representative reaction conditions and control structurally related bromides rather than relying on an SN2 screen.

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