ISO 3704:1976
p
ISO 3704:1976
9179

Applicable to products having acidities, expressed as H2 SO4 , equal to or more than 0.01 % (m/m). Describes the extraction of acidic substances with a mixture of water and propan-2-ol (isopropyl alcohol). Titration of the extract with standard volumetric sodium hydroxide solution in the presence of phenolphthalein as indicator. The preparation of the sample from the laboratory sample is carried out by grinding a sufficient quantity of the undried material until it passes through a sieve of nominal mesh of 250 m.


Informations générales 

  •  : Publiée
     : 1976-09
  •  : 1
     : 2
  •  : ISO/TC 47 Chimie
  •  :
    71.060.10 Éléments chimiques

Acheter cette norme

fr
Format Langue
std 1 40 PDF
std 2 40 Papier
  • CHF40

Vous avez une question?

Consulter notre FAQ

Service à la clientèle
+41 22 749 08 88

Horaires d’ouverture:
De lundi à vendredi - 09:00-12:00, 14:00-17:00 (UTC+1)