GB 38508-2020 PDF in English
GB 38508-2020 (GB38508-2020) PDF English
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Limits for volatile organic compounds content in cleaning agents
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Standards related to (historical): GB 38508-2020
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GB 38508-2020: PDF in English GB 38508-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.100.99
G 85
Limits for volatile organic compounds content in
cleaning agents
ISSUED ON: MARCH 04, 2020
IMPLEMENTED ON: DECEMBER 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Product classification ... 6
5 Limit requirements ... 6
6 Inspection methods ... 7
7 Packing marks ... 9
Bibliography ... 10
Limits for volatile organic compounds content in
cleaning agents
1 Scope
This Standard specifies the product classification of cleaning agents, limit
requirements, inspection methods and packing marks of volatile organic
compounds (VOC).
This Standard applies to cleaning agents containing volatile organic
compounds and produced and used in industrial production and service
activities.
This Standard does not apply to cleaning agents used in aerospace, nuclear
industry, military industry and semiconductor (including integrated circuit)
manufacturing.
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any
amendments) applies.
GB/T 4472 Determination of density and relative density for chemical
products
GB/T 6283 Chemical products - Determination of water Karl Fischer method
(general method)
GB/T 6680 General rules for sampling liquid chemical products
GB/T 13173-2008 Surface active agents - Detergents - Testing methods
GB/T 23990-2009 Determination of the contents of benzene, toluene,
ethylbenzene and xylene in coatings by gas chromatography
GB/T 23992-2009 Determination of chlorohydrocarbon content in coatings -
Gas chromatographic method
GB/T 23993 Determination of formaldehyde content of waterborne coatings
CARRY OUT according to the provisions of Clause 15 of GB/T 13173-2008,
where the determination procedure of semi-water-based cleaning agents and
organic solvent cleaning agents is revised as: Before the determination, it shall
evaluate whether there is a safety risk in the determination process according
to “Safety Data Sheet” (SDS) of cleaning agent products, and the test sample
with a safety risk shall be equipped with an explosion-proof oven for
determination; during the measurement, the weighing bottle containing the
sample shall be placed in an open environment below the flash point
temperature of the sample, and ventilate for 15 min ~ 30 min before putting into
the oven; safety protection measures for the testers shall be taken during the
determination process. Calculate the VOC content of cleaning agents
according to formula (1):
ρVOC = (wvolatile - wwater - wi) × ρ × 0.01 ……………………(1)
where:
ρVOC - the VOC content of the cleaning agent, in grams per liter (g/L);
wvolatile - the mass fraction of volatile substances in the sample test
solution, %;
wwater - the mass fraction of water in the sample test solution, %;
wi - the mass fraction of deductible substance i in the sample test solution, %;
ρ - the density of the sample test solution, in grams per liter (g/L);
0.01 - the conversion factor.
NOTE: i refers to substances such as p-chlorobenzotrifluoride, 1,1,1,3,3-pentafluoropropane
(HFC-245fa), 1,1,1,3,3-pentafluorobutane (HFC-365mfc), 1,1,1,2,2,3,4,5,5,5-
decafluoropentane (HFC-4310me), cis 1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz-z),
trans 1,3,3,3-tetrafluoropropene (HFO-1234ze), 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl
ether (HFE-347), methyl nonafluorobutyl ether 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane
(HFE-7100), ethyl nonafluorobutyl ether (HFE-7200). If the cleaning agent product contains
these substances, their name, content and test method shall be clearly indicated. The
conditions to be met by the test method are: the method’s lower limit of determination is ≤
0.01 %, and the method’s repeatability relative standard deviation is < 10 %.
6.3.4 Determination of formaldehyde
CARRY OUT according to the provisions of GB/T 23993.
6.3.5 Determination of the sum of benzene, toluene, ethylbenzene and
xylene
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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