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Product Name: Industrial Pure Terephthalic Acid(PTA)  
Trade Mark: Sanren Brand  
Alternative Name: ?  
Molecular formula/Structural Formula:
Production Process: Mitsui-Amoco Process: The raw material, para-xylene,is oxidized by air in a liquid phase and through steps of hydrogenation-purification.  
Properties: White powder-like crystal, sublimation at about 300℃,soluble in alkali solution, slightly soluble in hot ethylalcohol, tiny solubility in water, not soluble in ethyl ether, glacial acetic acid, and chloroform. The product has the features of high purity, even particle-size distribution, good sizing ability, low content of 4-carboxybenzaldehyde(4-CBA).  
Grade: ?  
National Standard Grade: ?  
Enterprise Standard Grade: ?  
Specifications:

SH 1612.1-95 (Petrochemical Industry Standard)

No.

Items

Qualiyindex

Testing Method

premium-grade

first-grade

1

Appearance

white powder

white powder

visual check1)

2

Acidity, mgKOH/g

675(+-2)

675(+-2)

SH/T 1612.2

3

4-CBA, mg/kg <=

25

25

SH/T 1612.6

SH/T 1612.7

4

Ash, mg/kg <=

15

15

GB/T 7531

5

Total heavy metal (Mo, Cr, Ni, Co,

Mn, Ti, Fe), mg/kg <=

10

10

SH/T 1612.3

SH/T 1612.5

6

Fe, mg/kg <=

2

2

SH/T 1612.3

7

Water, % <=

0.3

0.5

SH/T 1612.4

8

5% DMF color, Pt-Co color no. <=

10

10

GB/T 31432)

9

Para-methybenzoic Acid, mg/kg <=

150

report

SH/T 1612.7

10

Distribution of particle size

by contract

by contract

 

Note:

  1. Put proper amount of sample evenly in a white vessel or filter paper for visual check.
  2. Make the sample into 5% DMF solution for filtration. Take the filtrated stock to test according to GB/T 3143.
 
Scope of Application: ?  
Major Applications: 燯sed as the feedstock to produce polyester by direct esterification continuous condensation and then to produce polyester products. It also can be used to produce plasticizer, polyester lacquer etc. 
Process Method: ?  
Packing: Packed in PP woven bags lined with plastic bags, 1000kg?kg net in each bag.  
Packing Size: 900mm?00mm?000mm  
Storage: Separately stored in dry, ventilated warehouse equipped with fire-fighting facilities according to different grades and lot no.  
Transportation: Products in bags are transported by truck, train or vessel covered with waterproof tarpaulins. Handle with care.  
Safety Precautions: 1. Keep away from fire and heat sources for storage and transportation, since the product is inflammable, and its dust is explosive.
2. Can not be transported or stored together with chemicals like oils,acids and alkali etc.
3. Proper measures should be taken to avoid damages to goods and personnel during loading and unloading.
 
SPC

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