DIN ISO 5275:2005
石油产品和烃类溶剂.硫醇类和其他硫类的测定.检硫液法

Petroleum products and hydrocarbon solvents - Detection of thiols and other sulfur species - Doctor test (ISO 5275:2003)

标准号

DIN ISO 5275:2005

发布

2005年

发布单位

德国标准化学会

当前最新

DIN ISO 5275:2005

 

 

引用标准

ISO 1995:1981 ISO 3170 ISO 3171:1988 ISO 3696:1987

被代替标准

DIN ISO 5275:1987

适用范围

This International Standard specifies a procedure (Doctor test) for the detection of thiols (mercaptans), hydrogen sulfide and elemental sulfur in hydrocarbon solvents and distillate petroleum feedstocks and products. Preliminary procedures also detect the presence of peroxides and phenolic substances, which, when present in more than trace quantities, make the application of this International Standard inappropriate. Carbon disulfide, at relatively high concentrations [above 0,4 % (m/m) sulfur], also interferes with the interpretation of the test by causing darkening of the aqueous layer. NOTE For the purposes of this International Standard, the term "% (m/m)" is used to represent the mass fraction of a material. The test is a go/no-go procedure with a threshold value of thiol concentration dependent on the material under test. It is frequently used as a substitute for the quantitative determination of thiol content.

DIN ISO 5275:2005相似标准

推荐