ISO 3360:1976 PDF

ISO 3360:1976 PDF

Name:
ISO 3360:1976 PDF

Published Date:
08/01/1976

Status:
Active

Description:

Phosphoric acid and sodium phosphates for industrial use (including foodstuffs) -- Determination of fluorine content -- Alizarin complexone and lanthanum nitrate photometric method

Publisher:
International Organization for Standardization

Document status:
Active

Format:
Electronic (PDF)

Delivery time:
10 minutes

Delivery time (for Russian version):
200 business days

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Choose Document Language:
$16.2
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Applicable to products the F content of which is equal to or more than 0.5 mg/kg. Specifies the separation of the element from a test portion by steam distillation in a phosphoric acid medium. Formation of a blue-coloured complex with a combined reagent alizarin complexone/lanthanum nitrate in a buffered medium at the pH of 4.6. Addition of acetone to increase the stability of the complex and the sensitivity. Photometric measurement of the complex at a wavelength of about 600 nm.


File Size : 1 file , 400 KB
Note : This product is unavailable in Ukraine, Russia, Belarus
Number of Pages : 5
Published : 08/01/1976

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