Description

Phthalic Acid, Ammonium Salt is a key organic ammonium salt derivative of phthalic acid, valued for its role as a versatile chemical intermediate and functional additive. This compound is essential for industries requiring precise chemical synthesis and material modification. It is particularly relevant for manufacturers in the polymer, specialty chemical, and industrial coating sectors seeking reliable raw materials.

Application

• Intermediate in the synthesis of phthalimide and other nitrogen-containing heterocyclic compounds.
• Precursor or catalyst component in the production of certain plasticizers and polymer resins.
• Additive or buffering agent in specialized industrial formulations and chemical processes.
• Starting material for the preparation of corrosion inhibitors or metal treatment chemicals.
• Used in research and development for creating novel pharmaceutical or agrochemical intermediates.
• Potential component in flame retardant or intumescent coating systems.

Basic Information

Product Name	Phthalic Acid, Ammonium Salt
CAS No.	20450-76-4
Molecular Formula	C8H9NO4
Molecular Weight	183.16 g/mol
Synonyms	Ammonium Phthalate; Diammonium Phthalate; Phthalic Acid Diammonium Salt; 1,2-Benzenedicarboxylic Acid, Diammonium Salt; Ammonium Hydrogen Phthalate (for mono-salt, often confused); Phthalamic Acid Ammonium Salt (related derivative). Contact for additional trade names.
EINECS	243-826-5

Quality Control

Our Phthalic Acid, Ammonium Salt is produced and tested under a rigorous quality management system to ensure batch-to-batch consistency and reliability. While available in standard technical and purified grades, specifications can be adjusted to meet specific project requirements. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment.

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 tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and handling.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (Titration)	≥ 98.0%
Loss on Drying	≤ 2.0%
Water Content (Karl Fischer)	≤ 1.5%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%
pH (5% solution)	6.0 - 8.0

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