Intrduction:

TMA(Trimellitic anhydride), 1, 2, 4-phthalic anhydride, also known as partial anhydride.  The molecular formula is C9H4O5.  Appearance of white sheet, melting point, 164-166℃.  Boiling point 240-245℃, soluble in hot water and acetone, 2-J ketone, dimethyl formamide, ethyl acetate, cyclohexanone.  Soluble in anhydrous ethanol and reaction, slightly soluble in carbon tetracloride, toluene.

 

Properties:

Molecular formula: C9H4O5

Molecular weight: 192.12

CAS NO.:552-30-7

H.S CODE:2917399090

 

White Flakes, Musty odor; pH: 2.0; vapor pressure:less than 1.1X10-7mm HG at 25°C; vapor density: 6.6; boiling point : 390°C; melting point:164°C; solubility in water:moderate after hydrolysis to acid; specific gravity (water=1): 1.54

 

Specification:

 

Items	Limits
Appearance	White Flakes
Anhydride content (%)	95MIN
Crystallizing point (°C) .	164 MIN
Molten color (APHA)	150 MAX
Acid number (mg KOH/g)	865 MIN

 

Application

1. For trioctyl trimellitate-production.

Widely used as the clad material of electrical components, internal electric wires of vehicles, and semiconductors, etc., as well as, automotive cable, car upholstery, artificial leather, washing machine drain hose, venetian blinds, sealing materials and packing, etc.

2. For producing polyamide polyimide and polyester.

Mainly used for F and H grades motor insulation materials, which can be long-term used at 230-250 ℃. Additionally, it can be used for manufacturing the molded plastic parts of electrical components, valve parts, bearings, jet engine parts, and others.

3. For producing alkyd resin.

Mainly used as the prime coat of automotive, electrical appliances and mechanical products, and also used as the surface paint of kitchen, furniture and others, as well as, used for the industrial building materials and commonly paints, etc.

4、Other applications

It is cheap and practical curing agent. It is widely used for the places with higher decorative, anti-corrosion requirements, such as, household appliances, bicycles, doors, windows and others. And used as the heat resistant insulating laminates, synthetic dyes, heat resistant varnish, stabilizer, fiber softening agent, pigment, water treatment agent, cinefilm and surface active agent, etc.

 

 

Package and delivery:

25 kg net weight in composite bags, or at customer’s request, packed in woven bags at 500/1000 kg net weight.