Methyltetrahydrophthalic Anhydride (MTHPA) Price from Supplier Brand Hangzhou Reforest Tech & Trade Co., Ltd on Chemsrc.com

Published date: 2026-04-20 14:56:11

CAS number: 11070-44-3

Name: 1,3-Isobenzofurandione, tetrahydromethyl

Price:
$2.2/1kg

Purity: 99.0%

Stocking period: Inquiry

Stock: In Stock

Product Webpage: http://www.triggerchem.cn/product/60617972513-210736983/Methyltetrahydrophthalic_Anhydride_MTHPA_CAS_11070_44_3.html

Detail Product Information:
Product Name: Methyltetrahydrophthalic Anhydride
Synonyms: MTHPA, Tetrahydromethylphthalic Anhydride, 1,3-isobenzofurandione, tetrahydromethyl;
1,2,3,6-Tetrahydromethylphthalic anhydride
CAS No.: 11070-44-3
EC No.: 234-290-7
Molecular Formula: C9H10O3
Molecular Weight: 166.18
Chemical Structure:

Specification:
Appearance: Light yellow liquid, Clear
Color, Pt-Co: 200 max.
Viscosity, mPa.s at 25 DEG C: 45 max.
Density, g/cm3 at 20 DEG C: 1.20
Acid anhydride, %: 40.5 min.
Acid value, mg KOH/g: 660-685
Freezing point, DEG C: -15 max.
Loss on drying (120 DEG C), %: 1.0 max.
Free acid content, %: 0.5 max.

Applications:
MTHPA is mainly used as a curing agent for epoxy resins. It has a low tendency to absorb moisture from the air and zero or minimal formation of carbon dioxide when mixed with tertiary amine accelerators.
MTHPA can be easily blended with various liquid resins providing stable, low viscous mixture and long pot life. It is widely used for Casting or Potting, Impregnation, Pultrusion, Lamination and Filament winding process. In the field of fiber reinforced plastics, it is used for filament winding products, such as FRP pipes for oil, poles and sport appliance, it is also used for laminated sheets, printed circuit boards, switch gears.
MTHPA has excellent insulating properties to electrical parts such as: capacitors, resistors, wiring parts, transformers, ignition coils and motor.

Packing: 220kg iron drum or 1100kg IBC
Storage: Store in cool, dry and ventilated place, keep away from open flames or other potential ignition source, and should be protected from moisture, because it is easy to be crystallized when contact with the air moisture. In the winter season MTHPA can solidify, it can easily be remelted by simply heating.
Shelf life: 12 months

Name: Hangzhou Reforest Tech & Trade Co., Ltd

Chemsrc Level: Unverified

Product #: 27

Tel: 86-13957167880

Address: 509 Dongye Wangtian Business Building, No.9 Jiuyuan Road

Area: China(Mainland)

Contact: Bright Du

Contact Phone #: +86-13957167880

Email: triggerchem@126.com

Website: http://www.triggerchem.cn

Major Market: Southeast Asia, South America, North America, Ukraine, Russia, Europe

Annual Trade Volume: 5000mt

Foreign Trade % of Salers: 90-100%

Major partners: Epoxy composites

Detail introduction:
Hangzhou Reforest Tech & Trade Co., Ltd., specialize in fine and specialty chemicals business over 20 years. we are constantly committed to developing and marketing high performance and cost effectively chemicals to our valued customers in the world. Now, we are mainly engaged in Epoxy Additives, Polymer Additives, Paper Chemicals, Organic Intermediates, Pharmaceutical Chemicals, Water Treatment Chemicals, Daily Chemicals, Nutritional Supplements, Feed and Food Additives, Custom Synthesis.

TRIGGER is the trademark of the chemicals we deal in, it represents the meanings of “Precise, Quick, Efficient” in our business solutions and services.

We are proud of our passionate and talented employees in the company. We have professional technical team and sales team to guarantee the best services to our customers, and provide a variety of business solutions and services designed to the different demands from customers. We are always sourcing materials from superior factory only, and have established reliable and stable relations with our factories. We conduct sustainability assessments on our factories, and ensure they meet our strict requirements for responsible business contracts. Our excellent knowledge and expertise help us to win the confidence and trust from our customers and establish reliable partnership on long term base.

We pay high attention on environmental protection, health care and social responsibility. We execute strictly against ISO 9001 system on company management, business contract and quality control. We insist on the business idea of "Cooperative, Pursuing and Innovative", and would like to create a bright future with our customers under mutual benefits.

Name: Shanghai Nianxing Industrial Co., Ltd

Area: China

Price:
$2.2/1kg

Contact: Yang

Product Detail: 1,3-Isobenzofurandione, tetrahydromethyl

Name: Dayang Chem (Hangzhou) Co., Ltd.

Area: China

Price:
$2.2/1kg

Contact: Ms Wang

Product Detail: 1,3-Isobenzofurandione, tetrahydromethyl-

Name: Shanghai Jizhi Biochemical Technology Co., Ltd

Area: China