GB/T 601-2016 English PDF (GBT601-2016)

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GB/T 601-2016: Chemical reagent -- Preparations of reference titration solutions
GB/T 601-2016
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.040.40; 71.040.30
G 60
Replacing GB/T 601-2002
Chemical reagent -
Preparations of reference titration solutions
ISSUED ON: OCTOBER 13, 2016
IMPLEMENTED ON: MAY 1, 2017
Issued by: General Administration of Quality Supervision, Inspection
and Quarantine of the People’s Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 5 
1 Scope ... 8 
2 Normative references ... 8 
3 General rules ... 9 
4 Preparation and calibration of reference titration solutions ... 11 
4.1 Reference titration solution of sodium hydroxide ... 11 
4.2 Reference titration solution of hydrochloric acid ... 12 
4.3 Reference titration solution of sulfuric acid ... 13 
4.4 Reference titration solution of sodium carbonate ... 14 
4.5 Reference titration solution of potassium dichromate [c(1/6 K2Cr2O7) =
0.1mol/L] ... 16 
4.6 Reference titration solution of sodium thiosulfate [c(Na2S2O3) = 0.1mol/L]
... 17 
4.7 Reference titration solution of bromine [c(1/2 Br2) = 0.1mol/L] ... 18 
4.8 Reference titration solution of potassium bromate [c(1/6 KBrO3) =
0.1mol/L] ... 19 
4.9 Reference titration solution of iodine [c(1/2 I2) = 0.1mol/L] ... 20 
4.10 Reference titration solution of potassium iodate ... 21 
4.11 Reference titration solution of oxalic acid (or sodium oxalate) [c(1/2
H2C2O4) = 0.1mol/L or c(1/2 Na2C2O4) = 0.1mol/L] ... 23 
4.12 Reference titration solution of potassium permanganate [c(1/5 KMnO4)
= 0.1mol/L] ... 24 
4.13 Reference titration solution of ammonium ferric sulfate (II) {c[(NH4)2
Fe(SO4)2] = 0.1mol/L} ... 25 
4.14 Reference titration solution of cerous sulfate (or ammonium cerous
sulfate) {c[Ce(SO4)2] = 0.1mol/L or c[2(NH4)2 SO4 · Ce(SO4)2] = 0.1mol/L} ... 27 
4.15 Reference titration solution of ethylene diamine tetraacetic acid ... 28 
4.16 Reference titration solution of zinc chloride ... 30 
4.17 Reference titration solution of magnesium chloride (or magnesium
sulfate) [c(MgCl2) = 0.1mol/L or c(MgSO4) = 0.1mol/L] ... 32 
4.18 Reference titration solution of lead nitrate {c[Pb(NO3)2] = 0.05mol/L} . 33 
4.19 Reference titration solution of sodium chloride [c(NaCl) = 0.1mol/L] ... 34 
4.20 Reference titration solution of sodium thiocyanate (or potassium
thiocyanate, ammonium thiocyanate) [c(NaSCN) = 0.1mol/L, c(KSCN) =
0.1mol/L, c(NH4SCN) = 0.1mol/L] ... 35 
4.21 Reference titration solution of silver nitrate [c(AgNO3) = 0.1mol/L] ... 36 
4.22 Reference titration solution of mercury nitrate ... 37 
4.23 Reference titration solution of sodium nitrite ... 38 
4.24 Reference titration solution of perchloric acid [c(HClO4) = 0.1mol/L] ... 41 
4.25 Reference titration solution of potassium hydroxide-ethanol [c(KOH) =
0.1mol/L] ... 43 
4.26 Reference titration solution of hydrochloric acid-ethanol [c(HCl) =
0.5mol/L] ... 44 
4.27 Reference titration solution of ammonium ferric sulfate (III)
{c[NH4Fe(SO4)2] = 0.1mol/L} ... 45 
Appendix A (Normative) Correction value of the reference titration solution
volume at different temperatures ... 47 
Appendix B (Normative) Method for determining burette capacity ... 49 
Appendix C (Informative) Comparison of some reference titration solutions . 51 
Appendix D (Informative) Assessment on expansion uncertainty of reference
titration solution concentrations ... 60 
Appendix E (Informative) Method for processing mercury-containing waste
liquid ... 70 
Appendix F (Informative) Assessment on expansion uncertainty of the glass
gauge capacity ... 71 
Foreword
This Standard was drafted in accordance with the rules given in GB/T
1.1-2009.
This Standard replaces GB/T 601-2002 Chemical reagent – Preparations of
reference titration solutions. Compared with GB/T 601-2002, the major
technical changes are as follows:
— The relevant contents in general provisions 3.2, 3.6, 3.8, 3.9 and 3.10
have been modified (SEE 3.2, 3.6, 3.8, 3.9 and 3.10 of the present
edition; and 3.2, 3.6, 3.8, 3.9 and 3.10 of the 2002 edition);
— “The blank test is performed at the same time” has been added to the
method 1 of the reference titration solution of sodium carbonate, and
the method 2 (direct preparation with working reference reagent) has
been added (SEE 4.4.1.2 and 4.4.2 of the present edition; and 4.4.2
of the 2002 edition);
— The preparation method and calibration method 2 of the reference
titration solution of iodine have been modified (SEE 4.9.1 and 4.9.2.2 of
the present edition; and 4.9.1 and 4.9.2.2 of the 2002 edition);
— The preparation method of the reference titration solution of sodium
thiosulfate has been modified (SEE 4.6.1 of the present edition; and
4.6.1 of the 2002 edition);
— The reference titration solution of sodium oxalate has been added to
oxalic acid side by side, and the method 2 (direct preparation of the
reference titration solution of sodium oxalate with working reference
reagent) has been added (SEE 4.11.1.1 and 4.11.2 of the present
edition; and 4.11 of the 2002 edition);
— The method 1 has been added to the reference titration solution of
ammonium ferric sulfate (II), and “the blank test is performed at the
same time” has been added to the method 2 (SEE 4.13.3.1 and
4.13.3.2 of the present edition; and 4.13 of the 2002 edition);
— The method 2 (direct preparation with working reference reagent) has
been added to the reference titration solution of ethylene diamine
tetraacetic acid, and the effective number of bits of the molar mass of
the working reference reagent zinc oxide has been modified (SEE
4.15.1.2.1, 4.15.1.2.2 and 4.15.2 of the present edition; and 4.15.2.1
and 4.15.2.2 of the 2002 edition);
— Two concentrations of 0.05mol/L and 0.02mol/L have been added to the
Chemical reagent -
Preparations of reference titration solutions
Warning: Some of the testing procedures specified in this Standard may
result in hazardous conditions and the users are responsible for taking
appropriate safety and health measures.
1 Scope
This Standard specifies the preparation and calibration methods of the
reference titration solutions of chemical reagents.
This Standard applies to the preparation and calibration of the reference
titration solutions for determining the purity and impurity content of chemical
reagents by titration. Other fields are also available.
2 Normative references
The following documents are essential for the application of this document.
For dated references, only the dated editions apply to this document. For
undated references, the latest editions (including all amendments) apply to
this document.
GB/T 603 Chemical reagent – Preparations of reagent solutions for use in
test methods
GB/T 606 Chemical reagent – General method for the determination of
water (Karl Fischer method)
GB/T 6379.6-2009 Accuracy (trueness and precision) of measurement
methods and results – Part 6: Use in practice of accuracy values
GB/T 6682 Water for analytical laboratory use – Specification and test
methods
GB/T 9725-2007 Chemical reagent – General rule for potentiometric
titration
JJG 130 Liquid-in-glass thermometers for working
JJG 196-2006 Working glass container
JJG 1036 Electronic balance
verified by comparison (SEE Appendix C).
3.7 The relative expansion uncertainty of the concentrations of the
reference titration solutions in this St...