Brief introduction

Organic peroxides are organic compounds containing oxygen-oxygen bonds (---O---O---) (peroxy groups). It is characterized by decomposition and oxygen-containing free radicals after heating above a certain temperature, which is unstable and easy to decompose. It can be used as an initiator for free radical polymerization, an initiator for grafting reactions, a crosslinker for rubber and plastics, a curing agent for unsaturated polyester, and a molecular weight and molecular weight distribution regulator in the preparation of spinning-grade polypropylene.

When selecting organic peroxides, there are many factors to consider, such as:

half-life

Half-life time: The time required to decompose the remaining half at a given temperature. Most peroxide decompositions conform to the first-order reaction kinetics equation.

Half-life temperature: The temperature required to decompose half of the residue at a given time.

Half-life time and temperature are very important parameters for selecting the appropriate peroxide.

security

o Sensitive to heat and pollution

o Flammable

O May be sensitive to vibration and friction, such as benzoyl peroxide

o Decomposition releases heat and combustible gas and may spontaneously ignite

Maximum storage temperature

The maximum temperature at which the product can be stored, at which the product can be safely stored with as little activity reduction as possible.

Minimum storage temperature

o Some products have a minimum storage temperature.

Ø These products are sensitive to impact or friction and are generally diluted with solvents.

O When the temperature is lower than the minimum storage temperature, peroxides may precipitate, which is a risk.

Ø Safety, half-life temperature, half-life time, active oxygen, active ingredients, etc.

Shorter half-life times mean faster reactions and lower reaction temperatures.

Self-accelerating decomposition temperature

SADT

The lowest temperature at which the self-accelerating decomposition reaction of the test kit takes place.

The reaction produces flammable gases that may cause spontaneous combustion.

When the self-accelerating decomposition temperature is reached or exceeded, the time for the decomposition reaction to occur depends on how much temperature is exceeded and the time required for the reaction to release heat (heat released by increasing decomposition rates).

The content of active oxygen species

If A[O] < 1%, it is not defined as an organic peroxide

Incompatible substances

ØStrong acid, strong base and strong oxidant

Ø reducing agent, amines

Ø Transition metal salts, metal ions

Ø Some co-catalysts and accelerators

Compatible contact materials

Ø304 or 316 stainless steel (recommended)

o High density polyethylene, PTFE or glass inner layer

name Name	Chemical name Chemical	structure Structure	molecular weight molecular weight g/mol	Available oxygen content Active oxygen%	content content，%	Physical state	Half-life, half life temp.°C			Storage temperature, storage temp. °C
							10am	1h	1min	least	utmost
ioxide BPO	Benzoyl peroxide		242.2	4.95	75	grain	73	92	131	5	30
ioxide LPO	Lauroyl peroxide		398.6	3.95	98	Flakes	64	81	117	On	30
ioxide TBPB	tert-Butyl benzoate peroxide		194.2	8.07	98	liquid	104	125	171	8	30
ioxide TBPO	tert-Butyl peroxide 2-ethylhexanoate		216.3	7.25	98	liquid	77	94	128	On	15
ioxide BECAME	tert-Amyl peroxide 2-ethylhexanoate		230.3	6.7	98	liquid	75	92	126	On	10
ioxide DTBP	Di-tert-butyl peroxide		146.2	10.72	98	liquid	129	149	189	-30	30
Ioxide DTAP	Di-tert-amyl peroxide		174.4	8.81	96	liquid	123	143	184	On	30
ioxide CH	Di-tert-butylcyclohexanone peroxide		260.4	8.70	70	liquid	97	116	155	On	30
ioxide CH335	1,1-Di-tert-butylperoxide 3,3,5 trimethylcyclohexanone		302.5	9.52	90	liquid	96	115	153	On	30
ioxide TAHP	tert-amyl hydrogen peroxide		104.2	13.05	85	liquid	165	183		0	30
ioxide TBHP	tert-Butyl hydrogen peroxide		90.1	12.25	70/80	liquid	172	200	260	0	30
ioxide TAEC	2-ethylhexyl amyl carbonate peroxide		260.3	5.84	95	liquid	99	117	155	On	30
ioxide TBEC	2-ethylhexyl tert-butyl carbonate peroxide		246.3	6.17	95	liquid	100	121	166	On	30
Ioxide KP	4-Methyl-2-pentanone peroxide			8.0	45	liquid	/	/	/	On	35
ioxide K11	Ketone peroxide	Quartz stone is dedicated		8.0	80	liquid	/	/	/	On	35
ioxide K22	Ester peroxide	Quartz stone is dedicated		8.0	80	liquid	/	/	/	On	35
ioxide K30	Ester peroxide	Quartz stone is dedicated		6.4	80	liquid	/	/	/	On	35
ioxide TBMA	tert-Butyl cis butenedioate peroxide		188.2	3.35	40	Paste-like	82	104	150	0	30
ioxide 355	tert-Butyl peroxy-3,5,5-trimethylhexanoate		230.3	6.95	60	liquid	94	114	142	-20	25

ioxide TAPB

tert-Amyl peroxide

146.2

60

liquid

100

120

162

-10

30

 

Safety instructions for organic peroxides

1) Organic peroxides are oxidizing and flammable substances, please dispose of them with caution, must be stored in a cool and ventilated place, and keep the container closed. Keep away from fire. Avoid contact with reducing agents, heavy metals, alkali metals, desiccants, strong acids, strong bases and other chemicals. Products cannot be weighed in the warehouse. The product should be stored at the temperature on the product label.

2) Explosive hazard, it is strictly forbidden to mix with the accelerator, must be added to the resin separately.

3) The peroxide must be stored in the original barrel, and the leftover peroxide cannot be put back into the packaging barrel.

4) When using peroxide, safety protective gloves and goggles must be worn. Timely diluted peroxide may still cause damage to the skin and eyes.

It is absolutely forbidden to smoke or work in the workshop or warehouse

Emergency response in case of accident

Eye:

When the eye touches peroxide, rinse with plenty of water for at least1-5 minutes and seek medical attention

Mouth:

When ingesting peroxide, induce vomiting and seek medical attention

Skin:

Rinse your skin with clean water or shower, remove clothes and shoes contaminated with peroxide, and seek medical attention

Divulge:

Small leaks: Mix with an inert substance (such as vermiculite or clean sand) and put in a safe place. Extensive leakage: Avoid contact with any ignition sources and flammable substances. Spray water to reduce steam, keep substances moist, and do not use metal tools and equipment. Prevent material from entering sewers, basements and control areas.

Fire:

Low fire: spray dry powder or carbon dioxide to extinguish, sprinkle water to prevent re-ignition. Fire: Keep a safe distance of 1 0-15 meters to fight the fire. _{*The above information is for reference only and should not be used to contravene laws and security regulations}

Safe handling of organic peroxides

1) Organic peroxides are oxidizing and flammable chemicals which must be handled with care. Keep container in a cool well ventilated place. Keep packaging closed when in use. Avoid exposure to heat, sparks, flame or any other ignition source. Avoid contact with dust. Keep away from chemicals such as reducing agents, metal compounds and accelerators. Keep the products in proper temp.

2) Risk of explosion. Never mix peroxides with accelerators directly.

3) Peroxides should be stored in original containers. Don’t return peroxides to original container but collect left peroxides carefully.

4) Wear safe glasses and gloves while handling peroxides.

Smoking and ignition are strictly prohibited in workshop

Emergency

Eyes：

Wash with plenty of water for at least 15mins. Ask for medical advice!

Ingestion：

Wash mouth treat with water. Seek medical advice.

Skin：

Wash with plenty of water or shower. Remove contaminated clothing and shoes. 

Spill：

Little spill：mix with inert materials such as vermiculite or sands。 Large spill：avoid contact with any ignition sources and flammable materials. Use water spay to reduce vapors and keep them damp. Don’t use metal tools or equipment.

Fire：

Small fire：extinguish small fire with powder or carbon dioxide. Large fire: extinguish with large amounts of water. Applied from a safe distance 15m.

*the above data is only for reference. Our proposals can’t be used to contravene the law and safe rules.