Description

Benzenesulfonic Acid,4-(1,1-Dimethylethyl)- is a versatile organic sulfonic acid derivative, valued for its role as a key intermediate and catalyst in advanced chemical synthesis. Its structure, featuring a tert-butyl group, provides steric and electronic properties that are crucial for specific reaction pathways. This compound is essential for manufacturers and R&D facilities in the pharmaceutical, agrochemical, and specialty polymer industries seeking reliable, high-purity building blocks.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a sulfonated aromatic moiety.
• Catalyst & Co-catalyst: Used in organic synthesis, including esterification and alkylation reactions, where its strong acid properties are leveraged.
• Agrochemical Synthesis: Serves as a precursor in the manufacturing of herbicides, fungicides, and other crop protection agents.
• Polymer Modification: Employed in the production of ion-exchange resins and as a functional monomer to impart sulfonic acid groups into polymers.
• Dye & Pigment Manufacturing: Acts as an intermediate in the synthesis of sulfonated dyes and organic pigments.
• Research & Development: A valuable reagent for method development and exploratory chemistry in academic and industrial laboratories.

Basic Information

Product Name	Benzenesulfonic Acid,4-(1,1-Dimethylethyl)-
CAS No.	1133-17-1
Molecular Formula	C10H14O3S
Molecular Weight	214.28 g/mol
Synonyms	4-tert-Butylbenzenesulfonic Acid; p-tert-Butylbenzenesulfonic Acid; PTBSA; 4-(tert-Butyl)benzenesulfonic Acid; Benzenesulfonic acid, 4-(1,1-dimethylethyl)-; 4-tert-Butylphenylsulfonic Acid; p-tert-Butylphenylsulfonic Acid; 4-(tert-Butyl)phenylsulfonic Acid
EINECS	214-492-6

Quality Control

Our Benzenesulfonic Acid,4-(1,1-Dimethylethyl)- is produced under stringent quality management systems. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. Certificates of Analysis (COA) documenting these results are provided and can be tailored to meet specific customer or regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Due to its nature as a strong acid/organic solvent, containers should be kept tightly sealed to prevent moisture absorption and contamination. Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	95 - 100 °C
Loss on Drying	≤ 0.5%
Sulfated Ash	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.