Description

Terephthalic Acid 1-Methyl 4-Sodium Salt is a key sodium carboxylate derivative of a methylated terephthalic acid, valued for its enhanced solubility and reactivity in aqueous systems. This compound serves as a crucial intermediate and functional additive in advanced material synthesis and specialty chemical formulations. It is primarily sought by manufacturers in the polymer, textile, and fine chemical industries for developing specialized coatings, modifiers, and performance chemicals.

Application

• Polymer Modification: Acts as a comonomer or chain modifier in the synthesis of specialty polyesters and polyamides to alter thermal and mechanical properties.
• Textile Auxiliaries: Used in the formulation of dye intermediates, finishing agents, and flame-retardant treatments for synthetic fibers.
• Specialty Surfactants: Serves as a building block for anionic surfactants and emulsifiers with specific solubility profiles.
• Liquid Crystal Polymers (LCPs): A potential monomer for creating high-performance, temperature-resistant LCPs used in electronics and automotive parts.
• Pharmaceutical Intermediates: Employed in the synthesis of complex organic molecules and active pharmaceutical ingredients (APIs).
• Research & Development: Utilized in academic and industrial R&D for exploring new polymeric materials and organic reactions.

Basic Information

Product Name	Terephthalic Acid 1-Methyl 4-Sodium Salt
CAS No.	25151-46-6
Molecular Formula	C9H7NaO4
Molecular Weight	202.14 g/mol
Synonyms	4-(Carboxylato)-2-methylbenzoic Acid Sodium Salt; Sodium 4-Carboxy-3-methylbenzoate; 2-Methylterephthalic Acid 4-Sodium Salt; 1-Methyl-4-sodium carboxylatobenzene-2-carboxylic Acid; Monosodium 2-Methylterephthalate; TPA 1-Methyl 4-Na Salt; 4-Sodiooxycarbonyl-3-methylbenzoic Acid
EINECS	Contact for details

Quality Control

Our Terephthalic Acid 1-Methyl 4-Sodium Salt is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure consistency and meets high-purity standards suitable for industrial and research applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to guarantee supply reliability and product integrity.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%
pH (5% solution)	7.0 - 9.0

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