Dimethyl 5-sulfoisophthalate sodium salt

CAS 3965-55-7NaO3SC6H3-1Chemical Synthesis

Dimethyl 5-sulfoisophthalate sodium salt (CAS: 3965-55-7; Formula: NaO3SC6H3-1,3-(CO2CH3)2) is a valuable organic building block. With a molecular weight of 296.23 g/mol, this compound serves as a key intermediate in various chemical synthesis pathways. Its structure, featuring both sulfonate and ester functionalities, makes it suitable for applications requiring specific solubility or reactivity characteristics in organic and polymer chemistry.

Synonyms: 5-(Methoxycarbonyl)-isophthalic acid dimethyl ester sodium salt

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Dimethyl 5-sulfoisophthalate sodium salt (NaO3SC6H3-1) — chemical structure, CAS 3965-55-7; Chemistry, fine chemical supplied by Tech Serve Solutions

Building BlocksChemical SynthesisOrganic Building BlocksSulfonic/Sulfinic Acid SaltsSulfur Compounds

01 /Applications

Polymer Modification

Utilised in the synthesis of modified polymers to impart specific properties such as improved dyeability, hydrophilicity, or antistatic characteristics. The sulfonate group can enhance water solubility or ionic interactions within polymer matrices.

Organic Synthesis Intermediate

Acts as a building block in the creation of more complex organic molecules. Its difunctional nature allows for diverse reaction pathways in the development of fine chemicals and specialty materials.

Dye and Pigment Synthesis

Can be incorporated into the synthesis of certain dyes and pigments, potentially influencing their solubility, colour fastness, or affinity for specific substrates.

02 /Properties

Molecular weight	296.23
Linear formula	NaO3SC6H3-1,3-(CO2CH3)2
Assay	98%
Melting point	>300 °C(lit.)

03 /Safety & handling

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Warning

Hazard statements

H319Causes serious eye irritation

Precautionary statements

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
Safety statements (S)	26-36

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

3965-55-7

MDL number

MFCD00007493

PubChem substance

24848999

05 /Quality & supply

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.

06 /Frequently asked questions

What is Dimethyl 5-sulfoisophthalate sodium salt used for?

Dimethyl 5-sulfoisophthalate sodium salt (CAS: 3965-55-7) is used as a building block in organic synthesis and for polymer modification, potentially in the creation of dyes and pigments.

What are the CAS number and formula for Dimethyl 5-sulfoisophthalate sodium salt?

The CAS number is 3965-55-7 and the linear formula is NaO3SC6H3-1,3-(CO2CH3)2.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Dimethyl 5-sulfoisophthalate sodium salt with an assay of 98%. We do not represent this product as meeting USP, BP, or EP pharmacopoeia standards.

How should Dimethyl 5-sulfoisophthalate sodium salt be handled?

This compound may cause serious eye irritation (H319). When handling, use a dust mask type N95 (US), wear eyeshields, and gloves. Ensure good ventilation. In case of eye contact, rinse cautiously with water for several minutes, removing contact lenses if present and easy to do, and continue rinsing.

How is this chemical packed and exported by TSS?

Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including Dimethyl 5-sulfoisophthalate sodium salt, packed according to industry standards for safe transport.

How can I request a quote or sample?

To request a quote or sample of Dimethyl 5-sulfoisophthalate sodium salt, please contact the TSS sales department via our website or direct inquiry channels.