Fctory Supply Isophthalic Acid CAS: 121-91-5

• CAS No.: 121-91-5
• Formula: C8h6o4
• EINECS: 204-506-4
• Type: Pharmaceutical Intermediates
• Appearance: Powder
• Colour: White
• Model NO.: 121-91-5
• Transport Package: 25kgs/Drum
• Specification: 99%
• Trademark: ZB
• Origin: China
• Production Capacity: 100000kgs/Month

Product Description

                                                     Isophthalic acid

Terephthalic acid

CAS NO.:100-21-0

DENSITY:1.58 g/cm3 at 25 °C

BOILING POINT:214.32°C (rough estimate)

MELTING POINT:>300 °C (lit.)

DESCRIPTION &APPLICATION:

1,4-benzenedicarboxylic acid is mainly used for the production of poly (ethylene terephthalate). Also production of plasticizer
dioctyl phthalate (DOTP) and polyester plasticized agents. 1,4-benzenedicarboxylic acid and polyhydric alcohols have a
condensation reaction withd iethylene glycol, triethylene glycol, glycerol, butylene glycol, etc. preparation of the polyester plasticizer.
 

Product Name	Isophthalic acid
Category	Plant Extracts
Analysis	HPLC
Storage	Keep in cool and dry place, well-closed, away from moisture or direct sunlight.

Isophthalic acid (IPA), also known as 1, 3-benzoic acid or iso-phthalic acid, has strong heat resistance and hydrolysis resistance and chemical resistance, can occur salt dehydration hydrogenation halogenation and other reactions, the largest use is used as an unsaturated polyester resin production intermediate, followed by the manufacture of polyester resin alkyd resin (the main use of paint manufacturing) and printing ink In addition, it can also be used in reinforcing plastics and packaging, making film coloring agent, coating and dyeing modifier of polyester fiber, medicine and so on.

Item		Top grades	First grade
Appearance		White powder	White powder
Acid value /(mgKOH/g)		675±2	675±2
P-Carboxybenzaldehyde/(mg/Kg)		≤25	≤25
p-methylbenzaldehyde /(mg/Kg)		≤150	≤180
Ignition residue/(mg/Kg)		≤6	≤10
Total heavy metal (Mo,Cr, Ni, Co, Mn,Fe )/(mg/Kg)		≤3	≤5
Fe/(mg/Kg)		≤1	≤2
moisture W/%		≤0.2	≤0.2
DMF tinct(5g/100ml)/Hazen unit		≤10	≤10
(Platinum cobalt color number)
b*value		≤1.4	≤1.5
Particle size distribution	250μm W/%	7.9	7.9
	45μm W/%	10.2	10.2
	average grain diameter/μm(sieve method)	128	128

PTA is one of the important bulk organic raw materials, widely used in chemical fiber, light industry, electronics, construction and other aspects of the national economy. At the same time, the application of PTA is more concentrated. More than 90% of PTA in the world is used to produce polyethylene terephthalate (PET). It needs 0.85-0.86 tons of PTA and 0.33-0.34 tons of MEG to produce 1 ton of pet. Polyester includes fiber chip, polyester fiber, bottle chip and film chip. In the domestic market, 75% of PTA is used in the production of polyester fiber; 20% is used in the production of bottle grade polyester, mainly used in the packaging of various drinks, especially carbonated drinks; 5% is used in film grade polyester, mainly used in packaging materials, films and tapes. It can be seen that the downstream extension product of PTA is mainly polyester fiber.