NF ISO 127

NF ISO 127

December 2018
Standard Current

Rubber, natural latex concentrate - Determination of KOH number

This document specifies a method for the determination of the KOH number of natural rubber latex concentrate which is preserved wholly or in part with ammonia. The method is applicable to latices containing boric acid. The method is not applicable to latices preserved with potassium hydroxide. It is not necessarily suitable for latices from natural sources other than Hevea brasiliensis, or for latices of synthetic rubber, compounded latex, vulcanized latex or artificial dispersions of rubber.

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Main informations

Collections

National standards and national normative documents

Publication date

December 2018

Number of pages

15 p.

Reference

NF ISO 127

ICS Codes

83.040.10   Latex and raw rubber

Classification index

T42-013

Print number

1

International kinship

ISO 127:2018
Sumary
Rubber, natural latex concentrate - Determination of KOH number

This document specifies a method for the determination of the KOH number of natural rubber latex concentrate which is preserved wholly or in part with ammonia.

The method is applicable to latices containing boric acid.

The method is not applicable to latices preserved with potassium hydroxide. It is not necessarily suitable for latices from natural sources other than Hevea brasiliensis, or for latices of synthetic rubber, compounded latex, vulcanized latex or artificial dispersions of rubber.

Replaced standards (1)
NF ISO 127
July 2012
Standard Cancelled
Rubber, natural latex concentrate - Determination of KOH number

Le présent document spécifie une méthode de détermination de l'indice de potasse dans le latex de caoutchouc naturel préservé complètement ou partiellement à l'ammoniaque.

Table of contents
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  • Avant-propos
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Réactifs
  • 5 Appareillage
  • 6 Échantillonnage
  • 7 Mode opératoire
  • 8 Expression des résultats
  • 9 Fidélité
  • 10 Rapport d'essai
  • Annexe A (informative) Détermination du formaldéhyde
  • Annexe B (informative) Exemple de titrage type et de calcul du point de fin de titrage
  • Annexe C (informative) Déclaration de fidélité
  • Bibliographie
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