JAMMARK INTERNATIONAL TRADINGE(ZIBO) CO., LTD. is one of the most professional manufacturers and suppliers of isooctyl 3-mercaptopropionate in China. If you're going to buy high quality isooctyl 3-mercaptopropionate made in China, welcome to get more information from our factory. For price consultation, contact us.

Product uses

One of the most common uses of Isooctyl 3-Mercaptopropionate is as a fuel additive.

It is added to diesel to increase the cetane number, which is an indicator of fuel

combustion quality. This makes fuel combustion more efficient and smooth, reducing

engine noise and emissions. In addition, isobutyl nitrate is also used as a performance

enhancer for racing fuel.

Product Specification

Product package

190 kg/barrel or according to customer requirements.

Another important application of Isooctyl 3-Mercaptopropionate is as a vasodilator in the

medical industry. It is used to treat heart disease, especially angina, a chest pain caused

by insufficient blood supply to the heart. The function of isobutyl nitrate is to relax the smooth

muscle on the blood vessel wall, making it wider and improving blood flow.

If the role of the cetane number improver is simply to transfer heat to the working system,

then the increase in the cetane number exhibited by the fuel should be proportional to

the amount of the added improver. In fact, as the concentration of the improver increases,
the increase in the cetane number decreases. 

Moreover, some calculations prove that it is incomplete to explain the mechanism of

action of cetane number improvers only by heat. In the 1940s and 1950s,

Isooctyl 3-Mercaptopropionate was found through research that alkyl nitrates and 

peroxides are very effective improvers.

Nitrates and peroxides can increase the cetane number, and this effect is closely related

to the number of free radicals obtained from the thermal decomposition of the improver

during the ignition delay period. Experiments have proven that free radicals play a very

important role in improving combustion performance during the ignition delay period. This

is the so - called "free radical" mechanism.

Cetane number improvers are some compounds with relatively poor thermal stability.

They can decompose to generate active free radicals when heated at low temperatures.

These free radicals participate in the oxidation and decomposition reactions of diesel.

Centered around these free radicals, an oxidative chain reaction is initiated, which greatly

reduces the auto - ignition activation energy of diesel and improves the ignition performance
of the fuel.

After adding a cetane number improver to diesel, due to the participation of free radicals,

the fuel can undergo an oxidation reaction even at a relatively low temperature, and the

reaction rate is accelerated. This shortens the combustion ignition delay period and

apparently increases the cetane number of the fuel. Now, taking nitrates,nitrites and

peroxides as examples, the mechanism of action of cetane number improvers is

illustrated as follows:

Nitrates, Nitrites RONOx → RO· + NOx Peroxides ROOR → 2RO·

(Thermal Decomposition) ROR'· + Aldehyde or Ketone (Cleavage) R'· + OR'OO.

(Addition Reaction with O₂; Promote Free - radical Chain Reaction) The following are

the reaction mechanisms of several compounds decomposing to generate alkyl radicals.

Azo Compounds RNNR' → R'· + R· + N₂ Aldehydes RCH RC. RC. → R. + CO

Ketones RCR RC. + R'. RC. → R. + CO ROOCCOOR → 2R. + 2CO₂ Other studies

have shown that the mechanisms of action of nitrates and peroxides are not exactly

the same. Both can improve the ignition performance of ordinary diesel

Isooctyl 3-Mercaptopropionate. However, for fuels with low sulfur (S) and low nitrogen (N),

adding nitrates can shorten the ignition delay period, while adding peroxides hardly changes

the cetane number of the fuel.

This is mainly because peroxides mainly make the combustion more complete and

improve the engine efficiency by inhibiting the reaction termination effect of the

inhibitors in the fuel, while nitrates do not work in this way. Since the content of

inhibitors in low - S and low - N fuels is relatively low, the effect of peroxydicarbonate

compounds is not good.