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Specifications

5-(Sodiosulfo) Isphthalic Acid)(5-SSIPA)
Properties: white crystalline powder
Molecular formula:C8H5O7SNa   Molecular weight:268.24   Melting point :300oC
Structural formula:
 
Quality Index:
Index name
Top grade
Assay %                                                       ≥
Moisture %Water                                             ≤
Acid value (mg KOH/g)
Sulfate radical ppm                                       ≤
Fe ppm                                                        ≤
Chloride ppm                                                 ≤
Transmittance%
APH chroma (5% Aq. solution)                             ≤
Absorbency on 450nm (5% Aq. solution)                 ≤
99.0
0.5
418±3
100
4
8
90
15
0.015

Uses: used in the production of polyester in direct esterification method, it can be used as third monomer to improve dyeing property of products. It also can be used as intermediate and modifier of drug, pesticide and polyester.
Storage & transportation: Kept in dry and ventilating place, avoid moisture, insolation and fire. No mix with other chemicals.
Packing:PP woven bag or paper bag. net wt 500kg, 25kg or following your demands.