Customer Support: +44 (0)203 327 3140

Login to i2i Subscription Intertek.com
  • There are no items in your cart
We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
Go to AMERICAS site
Dismiss alert
Please enter a keyword to search
Advanced search
Home
BSI
BS 4427-11:1983

BS 4427-11:1983

Current

Current

The latest, up-to-date edition.

Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use Separation by column chromatography and determination of the different phosphate forms

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

28-02-1983

Publisher

British Standards Institution

Foreword
Cooperating organizations
Method
1 Scope
2 Principle
3 Reagents
4 Apparatus
5 Procedure
6 Expression of results
7 Test report
Appendix
A Determination of phosphorus (V) oxide in the eluates
   obtained by chromatographic separation of a column
Table
1 Concentrations of standard matching solutions and
   corresponding optical path lengths of cells
Figures
1 Ion-exchange column with dropping funnel
2 Ion-exchange colume with typical syphon device
3 Typical graph obtained during the determination of
   the elution conditions

Determination of ortho-, pyro- and tripolyphosphates, and higher condensed phosphate forms, in the absence of $7Itetra$7R- and $7Ipenta$7R-metaphosphates.

This Part of BS 4427 describes a method for the separation and the determination of the different phosphate forms in sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium diphosphate) for industrial use.

The procedure specified allows the selective determinations of orthophosphate (Na2HPO4), of pyrophosphate (Na4P2O7) and of tripolyphosphate (Na5P3O10), and also the evaluation of the total content of more condensed forms of phosphates in the absence of tetrametaphosphates and pentametaphosphates.

NOTE 1 In practice, tetrametaphosphates and pentametaphosphates are not usually present in commercial tripolyphosphates and pyrophosphates.

NOTE 2 Although the procedure can separate orthophosphate, its determination is not possible if the content is lower than 0.1 % (m/m); in this case its determination should be carried out by the method specified in BS 4427-8.

NOTE 3 The titles of the publications referred to in this Part of this British Standard are listed on the inside back cover.

Committee
CII/34
DevelopmentNote
Supersedes 82/52542 DC. (08/2005) Reviewed and confirmed by BSI, December 2011. (11/2011)
DocumentType
Standard
Pages
14
PublisherName
British Standards Institution
Status
Current

BS 4427-10:1976 Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use Determination of total phosphorus (V) oxide content: quinoline phosphomolybdate gravimetric method

BS 4427-10:1976 Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use Determination of total phosphorus (V) oxide content: quinoline phosphomolybdate gravimetric method
BS 3978:1966 Specification for water for laboratory use
BS 4427-8:1974 Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use Determination of orthophosphate content

View more information
£120.00
Excluding VAT
GBP
CAD
CHF
CNY
DKK
EUR
GBP
HKD
IDR
INR
JPY
KRW
MXN
NOK
NZD
SEK
SGD
USD
ZAR
Hardcopy - English
PDF - English
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.

Learn more on subscription solutions

or

Get in touch with us