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SN/T 3802-2014 English PDF

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US$319.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 3802-2014: Determination of free diisocyanate esters in polyurethane adhesives used in building for import and export
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 3802-2014	319	Add to Cart	3 days	Determination of free diisocyanate esters in polyurethane adhesives used in building for import and export	Valid

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Basic data

Standard ID: SN/T 3802-2014 (SN/T3802-2014)
Description (Translated English): Determination of free diisocyanate esters in polyurethane adhesives used in building for import and export
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: Q27
Classification of International Standard: 91.100.50
Word Count Estimation: 12,180
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 import and export building a diisocyanate compound with a polyurethane adhesive free (1, 4-phenylene diisocyanate, toluene diisocyanate, hexamethylene diisocyanate, trimethyl hexamethylene diisocyanate, iso isophorone diisocyan

SN/T 3802-2014: Determination of free diisocyanate esters in polyurethane adhesives used in building for import and export

---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.
(Import and export of construction diisocyanate compound with a polyurethane adhesive free - Determination) People's Republic of China Entry-Exit Inspection and Quarantine Standards Importers construction polyurethane adhesive Determination of free diisocyanate compound 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, Xiamen Entry-Exit Inspection and Quarantine Bureau Technology Center, Wenzhou People's Republic of China Exit Inspection and Quarantine. The main drafters of this standard. Lai Ying, Lin Rui, Huang Changchun, Han Chao, Ge Xiuxiu, Lin Weijing, Huanglong, Lin Haixia. Importers construction polyurethane adhesive Determination of free diisocyanate compound

1 Scope

This standard specifies the construction and export polyurethane adhesive free diisocyanate compound (1,4-phenylene diisocyanate, toluene Diisocyanate, hexamethylene diisocyanate, trimethyl hexamethylene diisocyanate, isophorone diisocyanate, diphenyl methane diisocyanate Ester) content by gas chromatography - mass spectrometry (GC-MS) and gas chromatography (GC). Wherein the gas chromatography - mass spectrometry for the arbitration law. This standard applies to import and export building free polyurethane adhesive 1,4-phenylene diisocyanate, toluene diisocyanate, hexamethylene Methyl diisocyanate, trimethyl hexamethylene diisocyanate, isophorone diisocyanate and diphenyl methane diisocyanate content Determination. Principle 2 The sample was dried by molecular sieves ultrasonic extraction with ethyl acetate. After the extract was filtered by gas chromatography - mass spectrometry and gas chromatography, Internal standard.

3 Reagents and materials

Unless otherwise indicated, the reagents used were of analytical grade. 3.1 molecular sieves (0.5nm). 4h before firing at 500 ℃ using a muffle furnace, placed in a desiccator to cool for use. 3.2 ethyl acetate. 250g per 500mL added molecular sieve (3.1), place the filter after 24h. 3.3 diisocyanate compound Standard. See Appendix A in Table A.1. 3.4 tetradecane (n-Tetradecane, CAS No. 629-59-4). purity ≥98%. 3.5 internal standard stock solution. Weigh accurately 1.0g n-tetradecane (3.4) standard (accurate to 0.0001g) in 100mL flask with acetic acid Ethyl ester (3.2) diluted to the mark, formulated at a concentration of 10mg/mL stock solution of the internal standard. 3.6 standard stock solution. Accurately weigh an adequate amount of diisocyanate compound standards, preparation of standard stock solution with ethyl acetate (3.2). Standard stock solution should be stored away from light, and avoid contact with moisture in the air. 3.7 standard solution. Pipette appropriate amount of standard stock solution (3.6), adding an appropriate amount of internal standard stock solution (3.5), diluted with ethyl acetate (3.2) into Applicable standard working solution concentration. Standard working solution should be stored away from light, and avoid contact with moisture in the air. 3.8 The organic phase filter. 0.22μm.

4 instruments and equipment

4.1 Gas chromatograph with mass detector. 4.2 Gas chromatograph equipped with a flame ionization detector. 4.3 vortex mixer. 4.4 ultrasonic cleaner (power ≥220W). 4.5 centrifuge. speed of not less than 4000r/min. 4.6 plug cuvette. 10mL. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of SN/T 3802-2014_English be delivered?

Answer: Upon your order, we will start to translate SN/T 3802-2014_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 SN/T 3802-2014_English with my colleagues?

Answer: Yes. The purchased PDF of SN/T 3802-2014_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.