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SN/T 3794-2014: Determination of colourity of purified terephthalic acid for industrial use - Spectrophtometric method
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 3794-2014 | English | 209 |
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Determination of colourity of purified terephthalic acid for industrial use - Spectrophtometric method
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SN/T 3794-2014
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Basic data | Standard ID | SN/T 3794-2014 (SN/T3794-2014) | | Description (Translated English) | Determination of colourity of purified terephthalic acid for industrial use - Spectrophtometric method | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | G15 | | Classification of International Standard | 71.080 | | Word Count Estimation | 8,826 | | Quoted Standard | GB/T 3143-1982; GB/T 8170 | | Regulation (derived from) | AQSIQ notification issued in 2014 on the first batch of 230 industry-standard entry-exit inspection and quarantine | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the spectrophotometric method for industrial use PTA chromaticity. This standard applies to industrial purified terephthalic acid (5 g/100 mL N, N- dimethyl formamide solution) measured chromaticity. | SN/T 3794-2014: Determination of colourity of purified terephthalic acid for industrial use - Spectrophtometric 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.
(Industrial PTA Chroma - Determination - spectrophotometry)
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Determination of terephthalic acid for industrial use fine chroma
Issued on. 2014-01-13
2014-08-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Ningbo Exit Inspection and Quarantine.
The main drafters of this standard. Lin Zhenxing, Wu bud, Huazheng Jiang, Yuxiong Fei, Xushan Hao, Wang Hao.
Determination of terephthalic acid for industrial use fine chroma
1 Scope
This standard specifies the spectrophotometric method for industrial use PTA chromaticity.
This standard applies to industrial use terephthalic acid (5g/100mLN, N- dimethyl formamide solution) measured chromaticity fine.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 3143-1982 Determination of color liquid chemicals (Hazen unit --- platinum - cobalt color number)
GB/T 8170 repair value expressed about the rules and limit values and judgment
3 Method summary
A sample dubbed 5g/100mLN, N- dimethylformamide (DMF) solution, after filtration, the absorbance was measured at 390nm wavelength
Degree, the absorbance multiplied by a constant in terms of Hazen unit --- 150 platinum - cobalt color number color.
4 Reagents and materials
N, N- dimethylformamide, AR.
5. Apparatus
5.1 Spectrophotometer. with 5cm cuvette.
5.2 Balance. a sense of the amount of 0.01g.
5.3 Ultrasonic instrument. frequency 53Hz.
5.4 glass flask. 25mL.
Step 6 Analysis
6.1 Determination of the absorbance of the blank DMF
The N, N- dimethylformamide injection 5cm cuvette at 390nm wavelength measured absorbance A0.
6.2 Determination of sample absorbance
Weigh 1.25g of purified terephthalic acid sample (accurate to 0.01g), pour pre-loaded with 15mL ~ 20mLDMF capacity of 25mL
Flask, and shake to dissolve, and then the flask placed in an ultrasonic vessel ultrasonic oscillations dissolved. After the sample is thoroughly dissolved in DMF
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