Rapid analysis method for sodium hydroxide and ammonia content in sodium cyanide reaction solution and its liquid products
A technology of sodium hydroxide and liquid products, which is applied in the direction of chemical analysis by titration method, can solve the problems of difficulty in accurate detection of sodium cyanide production control products, quality and safety accidents, hysteresis of hydrochloric acid reaction, etc., and achieve great reference and promotion value, prevention of safety and quality accidents, and ease of operation
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[0027] 1. Test samples
[0028] Randomly select 3 tubes of light oil pyrolysis liquid sodium cyanide reaction solution and 3 tubes of liquid sodium cyanide product as test samples, and detect the content of sodium cyanide in each sample according to the GB19306-2003 procedure for easy distinction.
[0029] Table 1: Test sample table
[0030]
[0031] 2. Testing process
[0032] (1) The process of using the national standard acid-base method and the national standard silver method to detect sodium hydroxide and ammonia content in each sample
[0033] ① Preparation of sample solution (GB 19306-2003)
[0034] Weigh 8g of sample 1 (about 7.5ml), accurate to 0.0002g. Place it in a beaker, dissolve it with water and transfer it to a 500ml volumetric flask, add water to the mark, and shake it to obtain a sample solution.
[0035] ②Analysis of sodium cyanide content (GB 19306-2003):
[0036] Use a pipette to transfer 25ml of sample solution, place it in an Erlenmeyer flask, add 75ml of water and ...
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