ISO 4275:1977
w
ISO 4275:1977
10115

Abstract 

Applicable to products having As contents more than 0.2 mg/kg. The principle consists in reduction of the element to arsine in a solution of silver diethyldithiocarbamate in pyridine. Photometric measurement of the purplish- red colour produced by the colloidally dispersed silver, at the maximum of the absorption curve (wavelength approximately 540 nm).


General information 

  •  :  Withdrawn
     : 1977-11
  •  : 1
     : 2
  •  : ISO/TC 47 Chemistry
  •  :
    67.220.20 Food additives
    71.060.50 Salts

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information.