**English Name:** PTBBA; 4-tert-Butylbenzoic Acid; p-tert-Butylbenzoic Acid
**Other Names:** p-tert-Butylbenzoic Acid, p-tert-butylbenzoic acid
**CAS Number:** 98-73-7
**Molecular Formula:** Câ‚â‚Hâ‚â‚„Oâ‚‚
**Molecular Weight:** 178.23 g/mol
**Grade:** Purum (ACS grade)
**Purity:** ≥99.0%
**Melting Point:** 164–168°C
**Appearance:** Colorless needle crystals, fine crystalline powder, or beige fragment powder
**Solubility:** Slightly soluble in water (0.07 g/L at 20°C), soluble in ethanol and benzene, insoluble in petroleum ether. Solubility in other solvents: 21.4% (at 20°C), 9% (at 20°C).
**Density:** 1.142 g/cm³
**Flash Point:** 180°C
**Irritancy:** May cause irritation to skin and eyes. Handle with care.
**Storage:** Store at room temperature (RT), away from moisture and direct sunlight.
**Applications:** Widely used in biochemical research, organic synthesis, and as an intermediate in the production of pharmaceuticals and fine chemicals.
This compound is a versatile building block in synthetic chemistry, especially in the development of aromatic compounds. Its high purity and stability make it suitable for laboratory-scale reactions and industrial applications. Always follow proper safety procedures when handling this substance.
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