GB/T 8297-2017
Rubber, natural latex concentrate.Determination of KOH number (English Version)

Standard No.

GB/T 8297-2017

Language

Chinese, Available in English version

Release Date

2017

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2024-04

Replace By

GB/T 8297-2023

Latest

GB/T 8297-2023

Replace

GB/T 8297-2008

Scope

This standard specifies the method for the determination of the potassium hydroxide (KOH) value of concentrated natural rubber latex preserved in whole or in part with ammonia. This standard applies to latex containing boric acid. This standard does not apply to latex preserved with potassium hydroxide. This standard does not necessarily apply to natural latexes other than Hevea brasiliensis, nor does it apply to synthetic latexes, compounded latexes, vulcanized latexes, and aqueous rubber dispersions.

GB/T 8297-2017 Referenced Document

• GB/T 18012 Rubber latex—Determination of pH*， 2021-10-11 Update
• GB/T 8290 Rubber latex—Sampling*， 2021-10-11 Update
• GB/T 8294 Natural rubber latex concentrate. Determination of boric acid content
• GB/T 8298 Latex, rubber.Determination of total solids content
• GB/T 8300 Natural rubber latex concentrate.Determination of alkalinity

GB/T 8297-2017 history

• 2023 GB/T 8297-2023 Determination of potassium hydroxide (KOH) value of concentrated natural rubber latex
• 2017 GB/T 8297-2017 Rubber, natural latex concentrate.Determination of KOH number
• 2008 GB/T 8297-2008 Natural rubber latex concentrate.Determination of KOH number
• 1987 GB 8297-1987 Determination of Potassium Hydroxide Value of Natural Concentrated Latex