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GB/T 33093-2016 English PDF

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US$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 33093-2016: Determination of chromium (Ⅵ) content in textiles dyeing and finishing auxiliaries
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 33093-2016	199	Add to Cart	3 days	Determination of chromium (Ⅵ) content in textiles dyeing and finishing auxiliaries	Valid

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Basic data

Standard ID: GB/T 33093-2016 (GB/T33093-2016)
Description (Translated English): Determination of chromium (��) content in textiles dyeing and finishing auxiliaries
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G70
Classification of International Standard: 71.100.01
Word Count Estimation: 10,170
Date of Issue: 2016-10-13
Date of Implementation: 2017-05-01
Regulation (derived from): National Standard Notice No.1716 of 2016
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

GB/T 33093-2016: Determination of chromium (Ⅵ) content in textiles dyeing and finishing auxiliaries

---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 chromium (Ⅵ) content in textiles dyeing and finishing auxiliaries ICS 71.100.01 G70 National Standards of People's Republic of China Textile dyeing and finishing auxiliaries products Determination of hexavalent chromium content Determination ofchromium (Ⅵ) contentintextilesdyeingand 2016-10-13 released 2017-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by the China Petroleum and Chemical Industry Association. This standard is under the jurisdiction of the National Dyeing and Mapping Subcommittee (SAC/TC134/SC1). The drafting of this standard. Zhejiang Province Inspection and Quarantine Science and Technology Research Institute, Zhejiang Chuanhua Co., Ltd., People's Republic of China Chongqing Entry - Exit Inspection and Quarantine Bureau. The main drafters of this standard. Xie Weibin, Chen Lihua, Tu Hongyu, Wang Junsu, Zhao Shanhong, Wu Jianjian, Zhao Ting, Zhao Mei. Textile dyeing and finishing auxiliaries products Determination of hexavalent chromium content WARNING. Personnel using this standard should have practical experience in formal laboratory work. This standard does not indicate all possible security issues. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set forth in the relevant national regulations.

1 Scope

This standard specifies the determination of hexavalent chromium content in textile dyeing and finishing auxiliaries. This standard applies to all types of textile dyeing and finishing auxiliaries in the determination of hexavalent chromium content.

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 6682 Analytical laboratory water specifications and test methods Representation and Judgment of Numerical Correction Rule and Limit Value of GB/T 8170

3 principle

The dichroic chromium in the textile dyeing and finishing agent is dissolved in the buffer, and the extract produced by the color reaction is filtered and then subjected to UV detection Or diode array detector liquid chromatography to determine the external standard method.

4 reagents and materials

Unless otherwise stated, only analytical reagents and tertiary water in accordance with GB/T 6682 are applicable. 4.1 Phosphoric acid solution. 700 mL of phosphoric acid (H3PO4, ρ = 1.71 g/mL) was diluted with water to 1000 mL. 4.2 Diphenylcarbazide solution. Weigh 1.0g1,5-diphenylcarbazide (C13H14N4O) dissolved in 100mL acetone, dropping 1 drop of glacial acetic acid. Note. The solution is placed in a brown bottle and stored at 4 ° C for 2 weeks. 4.3 Buffer. 22.8 g (accurate to 0.01 g) dipotassium hydrogen phosphate dihydrate (K2HPO4 · 3H2O) was dissolved in 1000 mL of water and treated with phosphoric acid (4.1) to adjust the pH to 8.0 ± 0.1 and deoxygenate with argon or nitrogen. 4.4 potassium dichromate (K2Cr2O7), excellent grade pure. at (120 ± 2) ℃ to dry constant. 4.5 hexavalent chromium standard stock solution, 1000mg/L. Weigh 2.829g (accurate to 0.0001g) potassium dichromate (K2Cr2O7) (4.4), water Dissolved, transferred, washed, fixed capacity to 1000mL volumetric flask. 4.6 hexavalent chromium standard working solution, 10mg/L. with a pipette to remove 1mL hexavalent chromium standard stock solution (4.5) to 100mL volumetric flask , Diluted with dipotassium hydrogen phosphate buffer (4.3) to the scale. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 33093-2016_English be delivered?

Answer: Upon your order, we will start to translate GB/T 33093-2016_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 33093-2016_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 33093-2016_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.