Isophthalic acid, 99%

Name: Isophthalic acid, 99%
Brand: Vaqora Chemicals
SKU: VQ-008507

About Isophthalic acid, 99%

Vaqora Chemicals supplies Isophthalic acid (Synthesis grade), a carboxylic acid registered under CAS number 121-91-5, specified at 99% purity. The compound has the formula C8H6O4, corresponding to a molecular weight of 166.13 g/mol. Systematically, it is named benzene-1,3-dicarboxylic acid. Common synonyms include meta-Phthalic acid and 1,3-Benzenedicarboxylic acid.

It is supplied as a powder. Reported physical data include a density of 1.526 g/cm3. Solubility: insoluble (water). Keep the container tightly sealed and store it in a cool, dry area. Good laboratory practice and suitable PPE are recommended during handling.

Key uses span fine chemical synthesis, polymer and resin production and paints, coatings and inks. It is used across pharmaceutical manufacturing, academic and industrial research and paints and coatings.

Available in 500 g, 5 kg and 4 x 25 kg packs, Isophthalic acid is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Fine chemical synthesis
Polymer & resin production
Paints, coatings & inks

Industries

Specifications & identifiers

Chemical identifiers
Product name	Isophthalic acid, 99%
Catalogue No.	VQ-008507
CAS Number	121-91-5
IUPAC name	benzene-1,3-dicarboxylic acid
Molecular formula	C₈H₆O₄
Molecular weight	166.13 g/mol
Exact mass	166.0266
Grade	Synthesis
Purity / assay	99%
HSN code	29173960
InChIKey	QQVIHTHCMHWDBS-UHFFFAOYSA-N
SMILES	C1=CC(=CC(=C1)C(=O)O)C(=O)O
PubChem CID	8496

Physical properties
Physical form	Powder
Appearance	Powder
Density	1.526 g/cm3
Solubility	Insoluble (water)
LogP (XLogP3)	1.7
H-bond donors / acceptors	2 / 4
TPSA	74.6 Å²
Synonyms	meta-Phthalic acid, 1,3-Benzenedicarboxylic acid, m-Phthalic acid, m-Benzenedicarboxylic acid, Acide isophtalique, Kyselina isoftalova, Isophthalate, m-Dicarboxybenzene, meta-benzenedicarboxylic acid, 4-09-00-03292 (Beilstein Handbook Reference), iso-phthalic acid

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 121-91-5

Industrial

Isophthalic Acid

CAS: 121-91-5
Formula: C₈H₆O₄
MW: 166.13 g/mol

VQ-019484

Frequently asked questions

What is the CAS number of Isophthalic acid, 99%?

The CAS Registry Number of Isophthalic acid, 99% is 121-91-5. It is also known as meta-Phthalic acid, 1,3-Benzenedicarboxylic acid, m-Phthalic acid.

What is the molecular formula and molecular weight of Isophthalic acid, 99%?

Isophthalic acid, 99% has the molecular formula C8H6O4 and a molecular weight of 166.13 g/mol. Its IUPAC name is benzene-1,3-dicarboxylic acid.

Which grade and pack sizes of Isophthalic acid, 99% can I order?

We supply Isophthalic acid, 99% in Synthesis (99%) grade, in 500 g, 5 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Isophthalic acid, 99%?

Yes. Every lot of Isophthalic acid, 99% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Isophthalic acid, 99% be shipped internationally?

Yes. We export Isophthalic acid, 99% worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.