Phthalamic acid
Phthalamic acid (CAS: 88-97-1), with the molecular formula H2NC(O)C6H4CO2H and a molecular weight of 165.15 g/mol, is an organic compound utilised in chemical synthesis. It functions as a building block, particularly within the realm of organic chemistry. Its structure incorporates both carboxylic acid and amide functionalities, making it a versatile intermediate for creating more complex molecules. This compound is suitable for various research and development applications.

Organic Synthesis Intermediate
Phthalamic acid serves as a key intermediate in the synthesis of various organic compounds. Its dual functional groups allow for diverse chemical transformations in multi-step synthetic routes.
Building Block for Heterocycles
This compound can be employed as a precursor for the construction of heterocyclic ring systems, which are important motifs in medicinal chemistry and materials science.
Research and Development
Utilised in laboratory settings for exploring new chemical reactions and developing novel molecular structures. Its reactivity profile makes it a valuable tool for academic and industrial R&D.
| Molecular weight | 165.15 |
|---|---|
| Linear formula | H2NC(O)C6H4CO2H |
| Assay | 97% |
| Melting point | 140-143 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Phthalamic acid used for?
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Phthalamic acid is primarily used as an intermediate in organic synthesis and as a building block for creating more complex organic molecules, particularly heterocyclic compounds. It is also employed in research and development settings.
What are the CAS number and formula for Phthalamic acid?
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The CAS number for Phthalamic acid is 88-97-1, and its molecular formula is H2NC(O)C6H4CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Phthalamic acid with an assay of 97%. This product is supplied for laboratory and research use and is not represented as USP, BP, EP, or any other pharmacopoeia grade.
What are the safety and handling considerations for Phthalamic acid?
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Phthalamic acid is classified as a warning substance, with hazards including skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask (N95), eyeshields, and gloves, should be worn. Handle in a well-ventilated area.
How is Phthalamic acid packed and shipped?
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Phthalamic acid is carefully packed to ensure safe transit. Tech Serve Solutions is an experienced global supplier and exporter, adhering to international shipping regulations for chemical products.
How can I request a quote or sample of Phthalamic acid?
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To request a quote or sample of Phthalamic acid, please contact our sales department through the website or by calling us directly. Our team will be pleased to assist with your inquiry.
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