Product Description
Methyl tetrahydrophthalic anhydride (MTHPA)
1\Chemical name: Methyl tetrahydrophthalic anhydride
Alias: 3A-methyl-5, 6-dihydro-4H-isobenzofuran-1, 3-dione
English name: MTHPA
CAS No: 19438-64-3
Molecular formula: C9H10O3
Molecular weight: 166.18
It is soluble in benzene and acetone, etc. It is hygroscopic.
Structural formular
Type: 3, 4-methyl THPA isomers mixture
Quality index
Item
Mark
SHY-9601
SHY-9602
SHY-9603
SHY-9604
Appearance
Light yellow transparent liquid
Colour and lustre. (platinum-cobalt )
≤ 300
≤ 200
≤ 80
≤ 120
Crystallization point degree
≤ -15
Acid valuemgKOH/g
660.0~685.0
Content%
≥ 40.50
ViscosityPa. S(25degree)
≤ 0.0500
≤ 0.0400
≤ 0.0400
≤ 0.0550
Densityg/cm3(20degree)
1.210± 0.05
Free acid %
≤ 0.50
Volatile matter%(120degree)
<2.00
Components structure
3-MTHPA/4-MTHPA=70/30, it is similar with Japan HN-2000
3-MTHPA/4-MTHPA=30/70, it is similar with JapanHN-2200
2\Performance characteristics
2.1 It has high purity and light color and luster. It can be directly adjusted into all kinds of colorful epoxy resin products.
2.2 It has low viscosity. It has the characteristics like: Good casting, embedment and impregnation technology. It can improve the performance of curing material and the affinity of lamination and basic material.
2.3 It has the characteristics like: Stable performance, low freezing point and long using life. It can be stored for a long time at room temperature and easy for pipeline transportation. It is suitable for production automation and severe cold region.
2.4 It has small volatility and low toxicity. Its irritation to human eyes and skin is small.
2.5 It has good dissolubility. This product can dissoluble with all epoxy resins. The mixing viscosity is low.
3\Main usage:
It is widely used in electrical, electronic and casting industry. It is the main raw material of mutual inductor, insulated paint, high-voltage electrical apparatus, glass fiber reinforced plastics pipelines in oilfield and glass fiber reinforced plastics insulating bush.
4\Storage, packing and transportation:
25kg plastic barrel or 220kg iron barrel. This product's performance is stable. In the storage and transportation process, it should be sealed and avoid moisture. It should be stored in dry and ventilated warehouse. It can be stored one year at room temperature.
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