5-Sulfoisophthalic acid monosodium salt Chemical Properties

Melting point:

373 °C

Density 

1.87[at 20℃]

storage temp. 

Sealed in dry,Room Temperature

pka

4.1[at 20 ℃]

form 

solid

color 

White to Almost white

Odor

Essentially odorless

Water Solubility 

380 g/L

BRN 

4170770

InChI

InChI=1S/C8H6O7S.Na.H/c9-7(10)4-1-5(8(11)12)3-6(2-4)16(13,14)15;;/h1-3H,(H,9,10)(H,11,12)(H,13,14,15);;

InChIKey

YXTFRJVQOWZDPP-UHFFFAOYSA-M

SMILES

S(C1C=C(C(=O)O)C=C(C(=O)O)C=1)(O)(=O)=O.[NaH]

LogP

-1.7 at 23℃

CAS DataBase Reference

6362-79-4(CAS DataBase Reference)

EPA Substance Registry System

Monosodium 5-sulfoisophthalate (6362-79-4)

Safety Information

Hazard Codes 

Xi,C

Risk Statements 

36/37/38-34

Safety Statements 

26-37/39-45-36/37/39-25-24/25

WGK Germany 

2

RTECS 

DB6030000

TSCA 

Yes

HS Code 

29173990

MSDS

• Language:English Provider:3,5-Dicarboxybenzenesulfonic acid sodium salt
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

5-Sulfoisophthalic acid monosodium salt Usage And Synthesis

Chemical Properties

WHITE FINE CRYSTALLINE POWDER

Uses

It can be used as the third monomer in the Polyester procession of esterification, which can improve the ability of product's dying. And it can be used as the catalyst in medicine, agricultural chemical, polyester. Used as a monomer for waterborne polyesters and nylon fibers, in adhesion aid for magnetic tapes, and amine free polyurethane dispersions.

Uses

5-Sulfoisophthalic acid sodium salt is a sulfonate carboxylate ligand which can be used in a variety of applications such as catalysis, gas storage, magnetic materials, and luminescence.

Synthesis

Example 5: Conversion of 5-sulfoisophthalic acid (HSIPA) to sodium isophthalic acid-5-sulfonate (NaSIPA) Synthesis Procedure: 691.5 g of acetic acid, 83.5 g of deionized water, 72.91 g of a 50% aqueous sodium hydroxide solution, and 250 g of HSIPA (94.4% purity, 4.4% water content, strong acid content of 0.85% as H2SO4). The mixture was heated to reflux temperature (106.3°C) and subsequently cooled to 25°C and maintained for 1 hour. Upon completion of the reaction, the slurry was filtered through a sintered glass funnel and the solids were washed with 2 x 63 g of acetic acid. The resulting product was placed in a vacuum oven and dried at 160 to 165 °C to yield a final 244.7 g of off-white solid sodium isophthalic acid-5-sulfonate. Note: Wet acetic acid can be recovered by distillation and used in subsequent batches to maintain consistent product quality and yield. Product purity is determined by standard analytical methods.

References

[1] Patent: WO2013/25784, 2013, A2. Location in patent: Paragraph 0058; 0059
[2] Patent: US2013/53593, 2013, A1. Location in patent: Paragraph 0066-0067

5-Sulfoisophthalic acid monosodium salt(6362-79-4)Related Product Information

• Potassium hydrogen phthalate
• Isophthalic acid
• Folic acid
• Bis(2-ethylhexyl) phthalate
• Benzoic acid
• Sodium sulfosalicylate
• Dimethyl phthalate
• Sodium 3-nitrobenzenesulphonate
• PHTHALIC ACID DISODIUM SALT
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• Sodium benzoate
• 5-Nitroisophthalic acid
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• Citric acid
• Sodium acetate