GB/T 12009.5-1992
Isocyanates--Determination of acidity (English Version)
- Standard No.
- GB/T 12009.5-1992
- Language
- Chinese, Available in English version
- Release Date
- 1992
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2016-09
- Replace By
- GB/T 12009.5-2016
- Latest
- GB/T 12009.5-2016(XG1-2019)
- Scope
- This standard specifies the method for the determination of acidity in isocyanates by potentiometric titration. This standard applies to the determination of acidity in polymethylene polyphenylisocyanate, 4,4'diphenylmethylene diisocyanate and toluene diisocyanate.
GB/T 12009.5-1992 history
- 0000 GB/T 12009.5-2016(XG1-2019)
- 2020 GB/T 12009.5-2016 Plastics.Aromatic isocyanates for use in the production of polyurethane.Part 5:Determination of acidity
- 1992 GB/T 12009.5-1992 Isocyanates--Determination of acidity
GB/T 12009.5-1992 -All Parts
GB/T 12009.1-1989 Isocyanates--Determination of total chlorine content
GB/T 12009.2-2016 Aromatic isocyanates for plastic polyurethane production - Part 2: Determination of hydrolyzed chlorine
GB/T 12009.3-2009 Plastic.Polmethylene polyphenyl isocyanate.Part 3:Determination of viscosity
GB/T 12009.4-2016/XG1-2019 Aromatic isocyanates for plastic polyurethane production Part 4: Determination of isocyanate content Amendment No. 1
GB/T 12009.4-2016/XG1-2019 Aromatic isocyanates for plastic polyurethane production Part 4: Determination of isocyanate content Amendment No. 1
GB/T 12009.5-2016/XG1-2019 Aromatic isocyanates for plastic polyurethane production Part 5: Determination of acidity Amendment No. 1
GB/T 12009.5-2016/XG1-2019 Aromatic isocyanates for plastic polyurethane production Part 5: Determination of acidity Amendment No. 1