Tertiary Butanol (TBA)

Tertiary Butanol (TBA)

CAS Number:75‑65‑0

Synonyms:tert‑Butyl alcohol; 2‑Methyl‑2‑propanol; trimethyl‑carbinol

Chemical Formula:(CH₃)₃COH

Product Introduction

A colorless liquid (or solid below ~23 °C) with a camphor-like odor. Fully miscible with water and organics. Commonly used as a solvent, paint remover, ethanol denaturant, and chemical intermediate in fuel additives like MTBE and ETBE.

Physical & Chemical Properties

Property Value
Appearance Clear liquid (solidifies below 23–26 °C)
Odor Camphor-like
Density ~0.775 g/mL @ 25 °C
Melting Point ~23–26 °C
Boiling Point ~82–84 °C
Flash Point ~11–12 °C closed cup
Vapor Pressure ~46 mmHg @ 25 °C
Solubility Fully miscible with water, ethanol, ether
TLV–TWA ~100 ppm (ACGIH)

Applications

  • Solvent in coatings, industrial cleaners, and fragrance industries
  • Ethanol denaturant and paint stripper
  • Intermediate for MTBE/ETBE oxygenates and tert‑butyl hydroperoxide
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