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SN/T 3709-2013: Determination of tin coating mass for tinplate. Spectrophotometric method
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| Std ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status |
| SN/T 3709-2013 | English | 209 |
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Determination of tin coating mass for tinplate. Spectrophotometric method
| Valid |
Basic data
| Standard ID | SN/T 3709-2013 (SN/T3709-2013) |
| Description (Translated English) | Determination of tin coating mass for tinplate. Spectrophotometric method |
| Sector / Industry | Commodity Inspection Standard (Recommended) |
| Classification of Chinese Standard | H11 |
| Classification of International Standard | 77.100 |
| Word Count Estimation | 8,854 |
| Quoted Standard | GB/T 2520; GB/T 6379.5; GB/T 6682; GB/T 8170 |
| Regulation (derived from) | National quality recognition (2013) 569 |
| Issuing agency(ies) | General Administration of Customs |
| Summary | This standard specifies the determination of the amount of tin horses mouth. This standard applies to the determination of the amount of tin horses mouth, measuring range: 1g/m ^ 2 ~ 25h/m ^ 2. |
SN/T 3709-2013: Determination of tin coating mass for tinplate. Spectrophotometric method
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of tin coating mass for tinplate.Spectrophotometric method
People's Republic of China Entry - Exit Inspection and Quarantine Industry Standard
Determination of tinplate content of tinplate - Spectrophotometric method
2013-11-06 release
2014-06-01 implementation
People's Republic of China
State Administration of Quality Supervision, Inspection and Quarantine issued
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed and approved by the National Certification and Accreditation Administration Committee.
The drafting unit of this standard. Tianjin Entry - Exit Inspection and Quarantine Bureau of the People's Republic of China.
The main drafters of this standard. Yang Lifei, Su Mingyue, Wang Haoyun, Yao Chuangang, Feng Shuang, Liu Jing.
Determination of tinplate content of tinplate - Spectrophotometric method
1 Scope
This standard specifies the tinplate tin plating quantity determination method.
This standard is applicable to the determination of the tinplate tinplate, the measurement range. 1g/m2 ~ 25g/m2
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 2520 cold - rolled electroplated tin steel sheet and strip
GB/T 6379.5 Accuracy of measurement methods and results (accuracy and precision) - Part 5. Determination of standard measurement methods Precision
An alternative to the degree
GB/T 6682 Analytical laboratory water specifications and test methods
Representation and Judgment of the Rule and Limit Value of GB/T 8170 Numbers
3 method summary
The tin surface of the sample surface is dissolved in hydrochloric acid solution, under the protection of ethanol solution, tin and pectin reagent to form a stable yellow network
The absorbance of the iron element was measured at a specific wavelength of 450 nm using the interference of thiourea to mask the iron element.
4 reagent
Unless otherwise stated, the reagents used are analytical reagents and the water is a secondary water complying with GB/T 6682.
4.1 Acetone.
4.2 anhydrous ethanol.
4.3 Ethanol (95%).
4.4 Cellulose Paint. Cellulose paint that is easy to dry in the air.
4.5 Hydrochloric acid (ρ = 1.19 g/mL).
4.6 Hydrochloric acid (3 1).
4.7 Hydrochloric acid (1 4).
4.8 thiourea solution (5%).
4.9 pectin-ethanol solution (0.04%), weighed 0.4g of pectin, dissolved in 1L ethanol (4.3).
4.10 tin standard solution (0.5000mg/mL, 20% hydrochloric acid medium). commercially available hydrochloric acid medium tin standard solution or according to the following methods. Said
Take 0.5g metal tin (99.99%), accurate to 0.0001g, placed in 250mL beaker, cover the dish, along the cup wall by adding 100mL hydrochloric acid
(4.5), dissolved by heating. Cooling, transferred to 1000mL volumetric flask, add 100mL hydrochloric acid (4.5) diluted to the mark, shake. In this solution
The tin content is 0.5000 mg/mL.
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