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Methyltetrahydrophthalic Anhydride MTHPA CAS 19438-64-3

CAS:
19438-64-3
Alias:
Tetrahydromethylphthalic anhydride
EINECS:
234-290-7
Molecular Formula:
C9H10O3
Quality Standard:
40% 99% (anhydride)
Packing:
220kg/drum or as per request
Factory Site:
Anhui, China
Mininmum Order:
25kg
Price inquiry:
sales@tnjchem.com
Manufacturer:
TNJ Chemical

Product Details

Methyltetrahydrophthalic Anhydride (MTHPA 40% 99%, CAS 19438-64-3) is low viscosity liquid anhydride epoxy curing agent, colourless to pale yellow transparent liquid, offered in full strength and 40% grade for epoxy casting, potting, filament winding, electrical insulation and composite materials. TNJ Chemical is the key manufacturer and exporter since from 2001 in China. We guarantee high quality, competitive price, stable supply, fast delivery and tech support etc. To find more, please contact sales@tnjchem.com

Product Information

Chemical Name Methyltetrahydrophthalic Anhydride

Abbreviation MTHPA

CAS No. 19438-64-3

Molecular Formula C₉H₁₀O₃

Molecular Weight 166.18

EINECS No. 234-290-7

Synonym 4-Methyltetrahydrophthalic anhydride, Tetrahydromethylphthalic anhydride

Chemphysical Properties

Appearance: Colourless to pale yellow clear liquid

Density: 1.20~1.22 g/cm³ @20℃

Viscosity: 50~80 mPa·s @25℃

Refractive Index: 1.495~1.497

Flash Point: ≥145℃

Freezing Point: ≤ -15℃

Solubility: Miscible with epoxy resin, acetone, toluene; hydrolyze upon contact with water

Character: Low viscosity, good impregnation, low shrinkage, excellent heat & electric insulation performance

Quality Specification

Item	Specification (Full strength 99%)	Specification (MTHPA 40%)
Appearance	Colourless to pale yellow transparent liquid	Colourless to pale yellow transparent liquid
Anhydride Content	≥99.0%	≥40.0%
Acid Value	660~685 mgKOH/g	280~320 mgKOH/g
Free Acid	≤0.50%	≤0.80%
Color (Pt-Co)	≤150	≤180
Volatile Matter	≤2.0%	≤1.50%

Use & Application

MTHPA is widely used liquid anhydride curing agent for epoxy resin. It is mainly used for electrical and electronic components encapsulation, transformers, capacitors, high voltage insulation casting. Also applied in carbon fiber/glass fiber composites, filament winding products, pultrusion profiles, wind power blade accessories, epoxy coatings and adhesives. Cured epoxy system features outstanding thermal resistance, low dielectric loss and mechanical strength.

Packing

220kg iron drum; IBC tank available on request. Custom packing can be arranged.

Delivery & Storage

Store in cool, dry and ventilated warehouse. Keep tightly sealed, strictly avoid moisture absorption, water and humid air contact. Separate from alkaline materials, oxidants and amines. Recommended storage temperature below 30℃. Shelf life 12 months under proper storage. Handle carefully during transportation to prevent drum damage and water ingress.

Related Tags :

MTHPA 40% as epoxy anhydride curing agent Tetrahydromethylphthalic anhydride C9H10O3 CAS 19438-64-3

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