4-Sulfo-1,8-naphthalic anhydride potassium salt
4-Sulfo-1,8-naphthalic anhydride potassium salt (CAS: 71501-16-1) is a chemical compound with a molecular weight of 316.33 g/mol. It serves as a valuable intermediate in the synthesis of various organic compounds. Its properties make it suitable for applications in materials science, particularly as a monomer in polymer development and in the creation of functional dyes and pigments.
- Synonyms
- 4-Sulfo-1,8-naphthalic anhydride potassium saltPotassium 4-sulfo-1,8-naphthalimide1,8-Naphthalimide, 4-sulfo-, potassium salt

Monomer for Polymer Synthesis
This potassium salt functions as a monomer in the development of specialized polymers. Its inclusion can impart unique optical or electronic properties to the resulting polymer chains.
Dye and Pigment Intermediate
It is utilised in the chemical industry as an intermediate for synthesising fluorescent dyes and pigments, leveraging the naphthalimide core structure for chromophore development.
Materials Science Research
The compound finds application in materials science research, contributing to the development of novel functional materials with tailored characteristics.
| Molecular weight | 316.33 |
|---|---|
| Empirical formula | C12H5KO6S |
| Assay | 90% |
| Grade | technical grade |

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 4-Sulfo-1,8-naphthalic anhydride potassium salt used for?
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This compound is primarily used as a monomer in polymer synthesis, an intermediate in the production of dyes and pigments, and in materials science research.
What are the CAS number and molecular formula for 4-Sulfo-1,8-naphthalic anhydride potassium salt?
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The CAS number is 71501-16-1 and the empirical formula (Hill Notation) is C12H5KO6S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this chemical as technical grade with an assay of 90%. We do not represent it as USP, BP, or EP grade.
What are the safety and handling precautions for this chemical?
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This compound is classified as a Warning. It may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Recommended personal protective equipment includes a dust mask type N95 (US), eyeshields, and gloves. Avoid breathing dust.
How is 4-Sulfo-1,8-naphthalic anhydride potassium salt packed and shipped?
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Tech Serve Solutions exports chemicals globally, ensuring appropriate packaging for safe transit and compliance with international shipping regulations.
How can I request a quote or sample for 4-Sulfo-1,8-naphthalic anhydride potassium salt?
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Please contact our sales team or use the online enquiry form to request a quote or sample. Provide your specific requirements and shipping details.
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