GB/T 15899-2021Chemical reagent—Manganese sulfate monohydrate (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document replaces GB/T 15899-1995 "Chemical Reagent Manganese Sulfate Monohydrate (Manganese Sulfate)", compared with GB/T 15899-1995, In addition to structural adjustments and editorial changes, the main technical changes are as follows.

---The technical requirements and determination methods of the content have been changed, and the analytical pure technical requirements have been adjusted from ">=99.0%" to "99.0%~ 101.0%"; the chemically pure technical requirements are adjusted from ">=98.0%" to "98.0%~101.0%" (see Chapter 5, 6.2,.1995 edition 3.1, 4.1);

--- Added seven technical requirements and measurement methods for loss on ignition, sodium, magnesium, potassium, calcium, copper, and lead (see Chapter 5, 6.3, 6.6, 6.7, 6.8, 6.9, 6.12, 6.14);

---The technical requirements for nickel have been changed, and the analytical pure technical requirements have been increased from "<=0.02%" to "<=0.002%"; chemical pure technology has been added Requirements (see Chapter 5, 3.2 of the.1995 edition);

---The technical requirements for zinc are changed, and the analytical pure technical requirements are increased from "<=0.02%" to "<=0.005%"; the chemical pure technical requirements are changed from "<=0.05%" is increased to "<=0.01%" (see Chapter 5, 3.2 of the.1995 edition);

--- Two technical requirements and measurement methods for heavy metals and non-precipitating ammonium sulfide (calculated as sulfate) have been deleted (see 3.2, 4.2.6, 4.2.7);

---Change the inspection rules (see Chapter 7, Chapter 5 of the.1995 edition);

---Changed the packaging and markings (see Chapter 8, Chapter 6 of the.1995 edition).

1 Scope

This document specifies the technical requirements, test, inspection rules, packaging and marking of the chemical reagent manganese sulfate monohydrate (manganese sulfate).

This document is applicable to the inspection of the chemical reagent manganese sulfate monohydrate (manganese sulfate).

Molecular formula. MnSO4·H2O Relative molecular mass. 169.01 (according to.2018 international relative atomic mass) CAS Number. 10034-96-5

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 601 Preparation of Standard Titration Solution for Chemical Reagents

GB/T 602 Preparation of standard solutions for impurity determination of chemical reagents Preparation of preparations and products used in GB/T 603 chemical reagent test method

GB/T 6682 Analytical laboratory water specifications and test methods

GB/T 9723-2007 General Rules of Flame Atomic Absorption Spectrometry for Chemical Reagents

GB/T 9729 General method for determination of chloride in chemical reagents

GB/T 9738 General method for determination of water-insoluble matter in chemical reagents

GB 15346 Chemical reagent packaging and marking

HG/T 3921 Chemical Reagent Sampling and Acceptance Rules

3 Terms and definitions

There are no terms and definitions that need to be defined in this document.

4 Traits

This reagent is a pale pink powdery crystal, soluble in water but insoluble in ethanol.

5 Technical requirements

The technical requirements of manganese sulfate monohydrate are shown in Table 1.