Storage method of iso-propyl nitrate

A technology of isopropyl nitrate and molecular sieve, applied in the storage field of isopropyl nitrate, can solve the problems of poor storage stability, easy discoloration and the like of isopropyl nitrate

Inactive Publication Date: 2005-06-29
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the shortcomings of poor storage stability and easy discoloration of existing isopropyl nitrate, the invention provides a storage method for isopropyl nitrate

Method used

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  • Storage method of iso-propyl nitrate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The industrial product isopropyl nitrate with obvious yellow was dried with anhydrous sodium sulfate for 30 minutes, then distilled, and the colorless main distillate was taken as a sample. The sample is a colorless transparent liquid with a purity of 99.5%, a water content of 0.138%, and an acid value of 69.44 mg / L.

[0014] 4 Å molecular sieves were activated at 500°C for 2 hours, and then placed in a desiccator to cool naturally.

[0015] Get 200 milliliters of isopropyl nitrate samples and add in the Erlenmeyer flask, add 1.0 g of 4 Å molecular sieves, cover the bottle stopper, and seal the bottle stopper with a polyethylene film, and place it in the dark at room temperature. Investigate the appearance, water content and acidity of the sample after 24 hours and the appearance after six months respectively. The test results are shown in Table 1.

Embodiment 2

[0017] 4. Molecular sieve consumption is 2.0 grams, and all the other are the same as implementing 1. The test results are shown in Table 1.

Embodiment 3

[0019] 4. Molecular sieve consumption is 4.0 grams, all the other are with implementing 1. The test results are shown in Table 1.

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Abstract

Disclosed is a method to store isopropyl nitrate, which store isopropyl nitrate and 4A molecular sieve together. Without any other special equipment, the 4A molecular sieve is used to be storage stabilizer of isopropyl nitrate, and it can be separated from the product, further mare, it can be regenerated and reused for many times, resulting in the storing period being prolonged from less than a week to more than half a year.

Description

(1) Technical field [0001] The invention relates to a storage method of isopropyl nitrate. (2) Background technology [0002] Isopropyl nitrate is a high-energy fuel, which is mainly used in the field of military industry and national defense. For example, it can be used as one of the components of rocket high-energy propellants, and can also be used as explosives; industrially used as fuel additives, fine chemical raw materials and solvents. [0003] However, there is a problem of poor storage stability in isopropyl nitrate, which obviously shows that the color changes from colorless to light yellow, and then deepens. The research results show that the main reason for this phenomenon is that the product contains a small amount of water and acidic impurities. Once these two substances exist, isopropyl nitrate will decompose, and the speed of this decomposition will become faster and faster. This will form a vicious circle, which is a huge obstacle to its further development...

Claims

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Application Information

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IPC IPC(8): C07C201/16C07C203/04
Inventor 宋庆宝沈田华
Owner ZHEJIANG UNIV OF TECH
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