DIN EN ISO 21078-1:2008
Determination of boron (III) oxide in refractory products - Part 1: Determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes (ISO 21078-1:2008); English version of DIN EN ISO 21078-1:2008-04

Standard No.

DIN EN ISO 21078-1:2008

Release Date

2008

Published By

German Institute for Standardization

Status

Be replaced

Replace By

DIN EN ISO 21078-1:2008-04

Latest

DIN EN ISO 21078-1:2008-04

Replace

DIN 51086-1:1998 DIN EN ISO 21078-1:2006

Scope

This part of ISO 20078 specifies methods of determining boron(III) oxide in refractory products and raw materials, in mass fraction of 0,01% or greater. It is applicable to the determination of total DOff)ri( Ill i oxide in oxidic materials for ceramics, glass and glazes. The determinahon of boron(III) oxide is carried out using one of the following four methods: a) alkaline titrimetry, which is applied to samples containing more than 0,5 % by mass of boron(III) oxide: b) azomethine H absorption spectrophotometry, which is applied to samples containing from 0,01% by mass to 2,5 % by mass of boron(III) oxide; c) curcumin absorption spectrophotometry (rothocyanine method), which is applied to samples containing from 0,01% by mass to 1,0 % by mass of boron(III) oxide; d) inductively coupled plasma atomic emission spectrometry (ICP-AES), which is applied to samples containing from 0,01% by mass to 15 % by mass of boron(III) oxide. NOTE 1 The method can be extended to 30 % boron(III) oxide using modified oxidic fluxes. NOTE 2 Interlaboratory test results for this part of ISO 21078 are given in Annex A.

DIN EN ISO 21078-1:2008 Referenced Document

• ISO 31-0 Quantities and units - Part 0: General principles; Amendment 2
• ISO 3310-1 Test sieves - Technical requirements and testing - Part 1: Test sieves of metal wire cloth*， 2016-08-01 Update
• ISO 3696 Water for analytical laboratory use; Specification and test methods
• ISO 6353-2 Reagents for chemical analysis — Part 2: Specifications — First series — Addendum 2
• ISO 6353-3 Reagents for chemical analysis; Part 3 : Specifications; Second series
• ISO 836 Terminology for refractories

DIN EN ISO 21078-1:2008 history

• 2008 DIN EN ISO 21078-1:2008-04 Determination of boron (III) oxide in refractory products - Part 1: Determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes (ISO 21078-1:2008); German version EN ISO 21078-1:2008
• 2008 DIN EN ISO 21078-1:2008 Determination of boron (III) oxide in refractory products - Part 1: Determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes (ISO 21078-1:2008); English version of DIN EN ISO 21078-1:2008-04
• 0000 DIN EN ISO 21078-1:2006
• 1998 DIN 51086-1:1998 Testing of oxidic raw materials and materials for ceramics, glass and glazes - Part 1: Determination of boric oxide

DIN EN ISO 21078-1:2008 Determination of boron (III) oxide in refractory products - Part 1: Determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes (ISO 21078-1:2008); English version of DIN EN ISO 21078-1:2008-04 has been changed from DIN 51086-1:1998 Testing of oxidic raw materials and materials for ceramics, glass and glazes - Part 1: Determination of boric oxide.