GB/T 7139-2002 Translated English of Chinese Standard. (GBT 7139-2002, GB/T7139-2002, GBT7139-2002): Plastics - Vinyl chloride homopolymers and copolymers - Determination of chlorine content [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]https://www.chinesestandard.net, 09/11/2018 - 17 páginas This standard specifies two methods for determining the chlorine content of vinyl chloride homopolymers and copolymers containing no plasticizers or additives, that is: - Method A (burning bomb); - Method B (burning bottle). |
Palavras e frases frequentes
acid solution 4.1 addition amount Ammonium ferric sulfate ammonium thiocyanate standard amount of sodium arithmetic mean blank burning test blank test burning bottle chlorine content chlorine expressed combustion improver Determination of chlorine determine the chlorine dry material electric-ignited bomb equivalent to 1.00 expressed in grams ferric sulfate indicator g of sodium g of specimen gas-ignited burning bomb GB/T homopolymers and copolymers Hydrogen peroxide mass fraction mass of chlorine melt cup member bodies Method B burning mL of silver mol/L nickel crucible nitrate standard titration nitric acid solution parallel determination results peroxide and combustion peroxide is 14 pipette the filtrate Plastics platinum wire Potassium hydroxide potentiometric titration Reagents Representation of results safety furnace sample silver nitrate standard Sodium nitrate standard titration solution STOPPER the volumetric Technical Committee thiocyanate standard titration titration or Volhard titration solution c(AgNO3 TRANSFER the material Vinyl chloride homopolymers Volhard method Method Volhard titration watch glass whilst ISO