PTA (Purified Terephthalic Acid) (99% Min)

HS Code. 2917361100
CAS: 100-21-0
Appearance: A white crystalline powder with a slight acidic odor

Description:
A white crystalline powder with a slight acidic odor. It is mildly irritating to the eyes, skin and respiratory tract.

Applications:
PTA is mainly used in the production of polyester products, including polyethylene terphthalate (PET), follows reaction with glycol, reagent for alkali in wool and an additive to poultry feeds.

Specifications:
Item Unit Index
Molecular weight g/mol 166.13
Melting point ° C sublimes at 402° C
Vapor density at 20° C (air = 1.0) 5.74
Vapor pressure at 20° C < 0.00013
pH 1% dilution 2.16
Acidity Mg of KOH/gm 675 ± 2
Moisture wt % 0.2 max
Ashes ppm 7 max
4 Carboxy benzaldehyde ppm 20 max
Color APHA (in N-N-Dimethyl From Amide Solution), HU 10 max
Iron ppm 0.5 max
PARA Toluic Acid ppm 120 max
Total metals Fe, Mn, Co, Cr, Ni, Mo, Ti ppm 2 max
Δ Y 10 max
B-Color 1.5 max
Storage and handling:
Multi ply paper bag with sealed plastic liner or heavy gauge plastic bag.