TMHP-CAS.3851-87-4

Product name: TMHP

English name:Bis(3,5,5-trimethylhexanoyl) peroxide

Chemical name: bis (3,5,5-trimethylhexyl) peroxide

Molecular formula: C18H34O4

Molecular weight: 314.5

Theoretical active oxygen content: 5.09%

Main decomposition products: CO2, 2,2,4,7,9,9-hexamethyldecane, 

2,4,4-trimethylpentane.

Safety indicators:

Half life (measured in chlorobenzene solution):

0.1 hour: 96 ℃

1 hour: 77 ℃

10 hours: 59 ℃

Thermal stability data:

Self accelerating decomposition temperature (SADT): 20 ℃

Emergency temperature (Tem): 10 ℃

Control temperature (Tc): 0 ℃

Storage temperature (Tsmax): -10/0 ℃

Technical standards:

Appearance: Clear liquid

Purity: 74-76%

Chromaticity:20 Pt-Co max

Inorganic and organic hydrolyzable chlorine: 250mg/kg max

packing:

The standard packaging is a polyethylene plastic bucket with a net weight of 20 kilograms. It can also be packaged according to the specifications requested by the user.

This product is a Class D liquid organic peroxide, cargo classification: 5.2, UN number: 3115, temperature controlled transportation, packaging for Class II dangerous goods. Railways and air transportation are prohibited.

Safety precautions:

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

(2) Avoid contact with reducing agents (such as amines), acids, bases, and heavy metal compounds (such as accelerators, metal soaps, etc.)

(3) Please refer to the Safety Data Sheet (MSDS) of this product.

Purpose:

1. Ethylene polymerization initiator

TMHP is the most commonly used LDPE tubular or kettle polymerization initiator. In order to obtain a wider polymerization temperature range, it is often used in conjunction with other initiators, with a polymerization temperature of 150-190 ℃.

2. Vinyl chloride polymerization initiator

TMHP is also an initiator for the aqueous suspension polymerization of vinyl chloride, with an initiation temperature of 50-70 ℃.

Storage conditions:

Keep the packaging sealed and in a well ventilated state, with a maximum storage temperature of 0 ℃. Avoid mixing with reducing agents such as amines, acids, alkalis, and heavy metal compounds (accelerators and metal soaps). It is strictly prohibited to pack or use in the warehouse.

Storage stability:

Store according to the manufacturer's instructions, and the product can meet the factory technical standards within three months.

Fire extinguishing:

Small fires need to be extinguished with dry powder or carbon dioxide fire extinguishers, and a large amount of water should be sprayed to prevent reignition. A large fire requires spraying a large amount of water from a safe distance.