GB 17762-2022 PDF in English
GB 17762-2022 (GB17762-2022) PDF English
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Safe requirements of thermotolerant glassware
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GB 17762-1999 | English | 239 |
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Safe and hygienic requirements of thermotolerant glass ware
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GB 17762-2022: PDF in English GB 17762-2022
GB
NATIONAL STANDARD OF THE
PEOPLE'S REPUBLIC OF CHINA
ICS 81.040.01
CCS N 64
Replacing GB 17762-1999
Safe requirements of thermotolerant glassware
ISSUED ON. DECEMBER 29, 2022
IMPLEMENTED ON. JANUARY 1, 2024
Issued by. State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 Technical requirements... 6
5 Test methods... 7
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents.
This document replaces GB 17762-1999 Safe and hygienic requirements of
thermotolerant glass ware. Compared with GB 17762-1999, in addition to structural
adjustments and editorial changes, the main technical changes are as follows.
a) The name of the standard is changed (see the cover; see the cover of the 1999
edition);
b) The terms and definitions are added (see Chapter 3);
c) The product classification is deleted (see Chapter 3 of the 1999 edition);
d) The distinguishing indicators between superior products and qualified
products are deleted, and the technical requirements are unified (see Chapter
4; see Chapter 4 of the 1999 edition);
e) The hydrolytic resistance performance at 98 ℃ is changed (see Chapter 4; see
Chapter 4 of the 1999 edition);
f) The technical requirements for hydrolytic resistance of glass grains at 121 °C,
acid resistance (spectroscopic method), acid resistance (gravimetric method),
alkali resistance, and boron trioxide content are added (see Chapter 4);
g) The ranges of linear thermal expansion coefficient for the heat resistant
appliance blown from glass and the heat resistant appliance pressed from glass
are specified separately (see Chapter 4; see Chapter 4 of the 1999 edition);
h) The technical requirements for thermal shock resistance temperature are
changed (see Chapter 4; see Chapter 4 of the 1999 edition);
i) The requirements for cadmium migration are added (see Chapter 4);
j) The amount of harmful element precipitation is modified to the migration
amount of lead and cadmium and the migration amount of arsenic and
antimony (see Chapter 4; see Chapter 4 of the 1999 edition);
k) The test methods for hydrolytic resistance of glass grains at 121 °C, acid
resistance (spectroscopic method), acid resistance (gravimetric method), alkali
resistance, and boron trioxide content are added (see 5.3, 5.4, 5.5, and 5.7);
Safe requirements of thermotolerant glassware
1 Scope
This document specifies the safety technical requirements and test methods for heat-
resistant glassware.
This document applies to all types of heat-resistant glassware.
2 Normative references
The contents of the following documents constitute the essential clauses of this
document through normative references in this text. Among them, for referenced
documents with dates, only the versions corresponding to the dates are applicable to
this document; for referenced documents without dates, the latest versions (including
all amendments) are applicable to this document.
GB/T 4548 Test method and classification for hydrolytic resistance of the interior
surfaces of glass containers
GB/T 6579 Laboratory glassware - Thermal shock and thermal shock endurance -
Test methods
GB/T 6580 Glass - Resistance to attack by a boiling aqueous solution of mixed
alkali - Method of test and classification
GB/T 6581 Glass - Resistance to attack by hydrochloric acid at 100 °C - Flame
emission or flame atomic absorption spectrometric method
GB/T 6582 Glass - Hydrolytic resistance of glass grains at 98 ℃ - Method of test
and classification
GB/T 12416.2 Glass - Hydrolytic resistance of glass grains at 121 ℃ - Test method
and classification
GB/T 15726 Glassware - Stress examination methods
GB/T 15728 Glass resistance to attack by a boiling hydrochloric acid gravimetric
method of test and classification
GB/T 16920 Glass - Determination of coefficient of mean linear thermal expansion
GB/T 28194 Glass - Double liner method for determination thermal coefficient
...... Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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