Terpene hydroperoxide PMHP 80-47-7

Terpene hydroperoxide

Trade name: Initiator PMHP

English name: P-menthane hydroperoxide

Chemical name: terpene hydroperoxide

Chemical structural formula:

Molecular formula: C10H20O2

Molecular weight: 172.26

Theoretical active oxygen content: 9.28%

CAS: 80-47-7

Security indicators:

Half-life (measured in 0.2 mol benzene solution):

0.1 hours: 176°C

1 hour: 151°C

10 hours: 128°C

Thermal stability data:

Self-accelerated decomposition temperature (SADT): 80°C

Critical temperature (Tem): 75°C

Storage temperature (Tsmax): 30/38 °C

Technical standards:

Purity: 50.0-55.0%       

Active oxygen content: 4.65-5.12%   

PH value of extraction solution: ≧4.0       

Cu++: 5mg/kg max

Mn++ : 5mg/kg max


The standard package is a polyethylene plastic drum with a net weight of 190 kilograms, IBC package is also available, and small packages can also be packaged according to the specifications required by the user.

PMHP is a liquid organic peroxide of Class F, Goods Classification: 5.2, UN No. 3109, Dangerous Goods Packing Group II. IMDG CODE is 5229.

Safety Precautions:

(1) Keep away from fire, open flames and heat sources.

(2) Avoid exposure to reducing agents (e.g., amines), acids, alkalis, and heavy metal compounds (e.g., accelerants, metal soaps, etc.)

(3) Refer to the Safety Data Sheet (MSDS) for this product.


PMHP is widely used as a polymerization initiator for styrene and its copolymers (e.g. SAN, ABS, SBR). Polymerization initiator for acrylic acid and methacrylic acid.

Storage conditions:

Keep the package closed and in a well-ventilated state, the maximum storage temperature of 35 ℃, to avoid and reducing agents such as amines, acids, alkalis, heavy metal compounds (accelerators and metal soaps), is strictly prohibited in the warehouse

Room dispensing and pickup.

Storage stability:

Stored in accordance with the conditions prompted by the manufacturer, the product can be guaranteed to meet factory technical standards within six months.

Fire Fighting:

Small fires need to be extinguished with dry powder or carbon dioxide extinguishers and sprayed with large amounts of water to prevent re-ignition. Large fires need to be sprayed with large quantities of water from a safe distance away.

We offer products for sale in China (in compliance withRegulations on the Administration of Internet Sales of Hazardous Chemicals) and some of the products of the global export services, can provide including hazardous chemicals packaging, "outbound cargo packaging performance inspection certificate", "commodity inspection list" and other related export procedures.
We have experience in exporting hazardous chemicals, including Class 5.2 Dangerous Goods with Cold Chain Transportation Products, Class 3 Dangerous Goods and Class 9 Dangerous Goods, etc., and have exported to the United States of America, Russia, Turkey, India, Ukraine and other countries.

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