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GB/T 23979.2-2009: Fluorescent whitening agents -- Determination of relative whiteness and shade -- Dyeing method for paper
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 23979.2-2009 | English | 189 |
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Fluorescent whitening agents -- Determination of relative whiteness and shade -- Dyeing method for paper
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GB/T 23979.2-2009
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Basic data | Standard ID | GB/T 23979.2-2009 (GB/T23979.2-2009) | | Description (Translated English) | Fluorescent whitening agents -- Determination of relative whiteness and shade -- Dyeing method for paper | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G55 | | Classification of International Standard | 71.100.01; 87.060.10 | | Word Count Estimation | 8,869 | | Date of Issue | 2009-06-02 | | Date of Implementation | 2010-02-01 | | Quoted Standard | GB/T 2374-2007; GB/T 6682-2008; GB/T 7973; GB/T 7974 | | Regulation (derived from) | National Standard Approval Announcement 2009 No.8 (Total No.148) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the method for measuring the paper strength and whitening whitening whitening yellow shade. This standard applies to the determination of fluorescent whitening whitening whitening paper strength and shade. This standard applies to the determination of fluorescent whitening whitening whitening paper strength and shade. | GB/T 23979.2-2009: Fluorescent whitening agents -- Determination of relative whiteness and shade -- Dyeing method for paper
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Fluorescent whitening agents. Determination of relative whiteness and shade. Dyeing method for paper
ICS 71.100.01; 87.060.10
G55
National Standards of People's Republic of China
Fluorescent brightener
Determination and strength whitening shade
Paper staining
Posted 2009-06-02
2010-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee Dye (SAC/TC134) centralized.
This standard was drafted. Shenzhen Pan Sheng Plastic Additives Co., Ltd., Shenyang Chemical Research Institute, the National Quality Supervision and Inspection Center dye.
The main drafters of this standard. Dong Zhongsheng, Liangpei Ji, Yanggui Fang, Wu Jiuying, Kiran Qin, Wang Yong.
Fluorescent brightener
Determination and strength whitening shade
Paper staining
1 Scope
This standard specifies the method for measuring the sheet fluorescent whitening whitening whitening intensity and shade.
This standard applies to the determination of the fluorescent whitening agent whitening paper strength and shade.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
General conditions GB/T 2374-2007 Determination of dyes provisions
GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD)
GB/T 7973 paper, board and pulp - Determination of diffuse reflectance factor (diffusion/vertical method) (GB/T 7973-2003, ISO 2469.
1994, NEQ)
GB/T 7974 paper, paperboard and pulp brightness (whiteness) measured (diffusion/vertical method) (GB/T 7974-2002, ISO 2470.
1999, NEQ)
3 equipment and materials
Equipment and materials shall comply with GB/T 2374-2007 relating to equipment and materials; experimental water should comply with GB/T 6682-
2008 three water requirements.
a) white Instrument. should meet GB/T 7973 and GB/T relevant requirements in 7974;
b) analytical balance. a sense of the amount of 0.0001g;
c) with a small laboratory padding machine;
d) rapid qualitative filter paper;
e) brown volumetric flask.
4 Determination
4.1 Padding France
4.1.1 General provisions
Depending on the nature of products, padding depth and immersion time specified in the product standard, usually selected in the following ranges.
Padding Depth. 0.2g/L ~ 2g/L;
Immersion time. 10s ~ 60s.
4.1.2 Prepare the pattern
Take a large sheet of rapid qualitative filter paper, cut into 5cm × 10cm of alternate pattern.
4.1.3 preparation of padding liquor
Weigh accurately a quantity of sample and standard samples were placed in a beaker was dissolved in water and transferred to a suitable brown volumetric flask, dilute with water
Diluted to scale shake, dubbed a predetermined concentration of padding liquor spare.
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