IS 574 : 2024 Glassy Sodium Metaphosphate - Specification
1 SCOPE
This standard prescribes the requirements and methods of sampling and test for glassy sodium metaphosphate, technical [(NaPO3)]n with Na2O/P2O5 mole ratio of 1.0 to 1.1. It is also known as sodium hexametaphosphate or Graham's salt.
2 REFERENCES
The standards given below contain provisions which, through reference in this text, constitute provision of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of these standards:
| IS No. | Title |
| IS 265 : 2021 | Hydrochloric acid - Specification (fifth revision) |
| IS 915 : 2012/ISO 1042 : 1998 | Laboratory glassware - onemark volumetric flasks (third revision) |
| IS 1070 : 2023 | Reagent grade water - Specification (fourth revision) |
| IS 4905 : 2015/ISO 24153 : 2009 | Random sampling and randomization procedures (first revision) |