Our phone
+380674077962
Write to us
office@silkor.com.ua
Skip to content MTHPA – methyl tetrahydrophthalic anhydride - a hot curing agent (hardener) for epoxy resins and compounds.
Chemical Name: Methyl tetrahydrophthalic anhydride (MTHPA)
Molecular formula: C9H10O3
Molecular weight: 166.17
Synonyms: methyl-tetrahydrophthalic anhydride; MTHPA; 3a-methyl-3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione; tetrahydromethylphthalic anhydride; 1,2,3,6-tetrahydromethylphthalic anhydride; 1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydromethyl-; Methyltetrahydrophthalic anhydride; Phthalic anhydride, methyltetrahydro-
CAS. No: 26590-20-5 / 11070-44-3, EC 247-830-1
The anhydride hardener MTHPA is used for hot curing of epoxy resins, e.g. ED-20, for the manufacturing of electronic and mechanical products:
To control the polymerization (curing) rate accelerator additives are used.
Composite products made of epoxy resin with the use of anhydride hardener have high physical, mechanical and dielectric characteristics, are moisture-resistant, weather-resistant, heat-resistant, chemically resistant.
Store in original tightly closed container at temperature from +10°C up to +30°C. Store in a cool, dry, well-ventilated place. Protect from moisture and direct sunlight. Store away from heaters, oxidizers, strong acids, alkalis and other chemicals having alkaline reaction for example, ammonia, amines).
The guaranteed shelf life in original container is 12 months.
Storage over the date specified on the label does not necessarily mean the product is unusable. In case if store more please check the properties of product before use.
Metal drums with a capacity of 220 kg.
Detailed instructions are given in the relevant product safety data sheet. It can be provided upon request.
| Parameter name and measure unit | Standard |
|---|---|
| Appearance | Colorless or light yellow liquid |
| Color by cobalt scale, max | 200 |
| Chemical formula | C9H10O3 |
| Molecular weight | 166,17 |
| Anhydride group content, %, min | 41,0 |
| Free acids, %, max | 0,5 |
| Density, at +25℃, g/cm3 | 1,19 – 1,21 |
| Viscosity, at +25℃, mPa*s | 30,00 – 50,00 |
| Acid number, mgKOH/g | 660 – 685 |
| Freezing point, ℃, max | -15,0 |
| Volatile content, %, max | 1,0 |
| Loss on drying at +120℃, %, max | 2 |
