GB 8570.2-1988 Determination of ammonia content in liquid anhydrous ammonia

This standard specifies the calculation method of ammonia content in liquid anhydrous ammonia (liquid ammonia). The residual content measured by the weight method minus 100 is the arbitration method. GB 8570.2-1988 Determination of ammonia content in liquid anhydrous ammonia GB8570.2-1988 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Liguefied anhydrous ammonia
Determination of ammonia content
Liguefied anhydrous ammonia
-Estimating of ammonia contentUDC 661.518
GB 8570.2—88
Replaces GB536—65
This standard specifies the calculation method of ammonia content of liquid anhydrous ammonia (liquid ammonia). The content of residue measured by the weighing plate method minus 100 is the arbitration method.
1 Reference Standards
GB8570.3—88 Determination of residue content of liquid anhydrous ammonia Gravimetric method GB 8570.4—88 Determination of residue content of liquid anhydrous ammonia Volumetric method 2 Principle
The ammonia content is obtained by subtracting the liquid ammonia residue content measured by the gravimetric method or the volumetric method from 100. 3 Result Expression
8.1 The ammonia content X (by weight method) and X2 (by volume method) expressed in mass percentage are calculated according to formula (1) and (2) respectively:bZxz.net
X,= 100 - 31
X, = 100 - 2
Where: 1——Residue content measured according to GB8570.3, %;——Residue content measured according to GB8570.4, %. x 2-
3.2 Allowable Error
3.2.1 The arithmetic mean of the results of two parallel calculations is taken as the measurement result. 8.2.2 Absolute allowable difference of parallel calculation results: Ammonia content, %
Additional Notes:
Absolute allowable difference, %
This standard is under the jurisdiction of Shanghai Research Institute of Chemical Industry, Ministry of Chemical Industry. This standard was drafted by Shanghai Research Institute of Chemical Industry, Ministry of Chemical Industry and Wujing Chemical Plant. The main drafters of this standard are Yin Yongkang, Jin Zhigen, Yao Bingsheng, Liu Miaode and Zhang Wenwei. Approved by the Ministry of Chemical Industry of the People's Republic of China on December 2, 1987128
Beijing Capital Free Hall
Implementation on September 1, 1988
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