GB/T 12688.5-2011
Test mehod of styrene for industiral use.Part 5: Determination of content of total aldehydes.Titrimetric method (English Version)

Standard No.: GB/T 12688.5-2011
Language: Chinese, Available in English version
Release Date: 2011
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Status: Be replaced 2020-05
Replace By: GB/T 12688.5-2019
Latest: GB/T 12688.5-2019
Replace: GB/T 12688.5-1990

Scope: This part specifies the method for the determination of total aldehyde content in styrene for industrial use. This section applies to the determination of styrene samples with a total aldehyde content of 10 mg/kg to 300 mg/kg. The total aldehyde content is calculated and reported as benzaldehyde. The presence of ketones in the sample will interfere with the determination. This section is not intended to address all safety issues related to its use. It is the user's responsibility to establish appropriate safety and health measures to ensure compliance with relevant national laws and regulations.

GB/T 12688.5-2011 Referenced Document

GB/T 3723 Sampling of chemical products for industrial use--Safety in sampling
GB/T 601 Chemical reagent.Preparations of reference titration solutions*， 2016-10-13 Update
GB/T 6680 General rules for sampling liquid chemical products
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

2019 GB/T 12688.5-2019 Test method of styrene for industrial use—Part 5：Determination of the content of total aldehydes—Titrimetric method
2011 GB/T 12688.5-2011 Test mehod of styrene for industiral use.Part 5: Determination of content of total aldehydes.Titrimetric method
1990 GB/T 12688.5-1990 Styrene for industrial use--Determination of content of total aldehydes--Titrimetric method