|
US$154.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 3939-2014: Food contact materials - Wood material - Determination of oxidizing residues in cork stoppers - Iodometric titration method
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 3939-2014 | English | 154 |
Add to Cart
|
3 days [Need to translate]
|
Food contact materials - Wood material - Determination of oxidizing residues in cork stoppers - Iodometric titration method
| Valid |
SN/T 3939-2014
|
PDF similar to SN/T 3939-2014
Basic data | Standard ID | SN/T 3939-2014 (SN/T3939-2014) | | Description (Translated English) | Food contact materials - Wood material - Determination of oxidizing residues in cork stoppers - Iodometric titration method | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X08 | | Classification of International Standard | 67.250 | | Word Count Estimation | 8,868 | | Date of Issue | 4/9/2014 | | Date of Implementation | 11/1/2014 | | Quoted Standard | GB/T 601; GB/T 6682 | | Adopted Standard | ISO 21128-2006, IDT | | Regulation (derived from) | State inspection certification (2014) 210 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the method for the detection of food contact materials cork wood oxide residue. This standard applies to the determination of food contact materials cork wood oxide residue. | SN/T 3939-2014: Food contact materials - Wood material - Determination of oxidizing residues in cork stoppers - Iodometric titration 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.
(Food contact materials cork wood residues measured oxidation iodometric titration)
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Food contact materials - wood cork
Determination of the oxidation residue iodometric titration
(ISO 21128.2006, Corkstoppers-Determinationofoxidizing
residues-Iodometrictitrationmethod, IDT)
Issued on. 2014-04-09
2014-11-01 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 identical with ISO 21128.2006 "Determination of residue cork oxide Iodometry."
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Fujian Exit Inspection and Quarantine.
The main drafters of this standard. Jiang Xiaoli, Liang Ming, Chen Jinfeng, Tang Xi, Cao Guoqing, Tang Hong, Chen Min reality.
Food contact materials - wood cork
Determination of the oxidation residue iodometric titration
1 Scope
This standard specifies the method for the detection of food contact materials cork wood oxide residue.
This standard applies to the determination of food contact materials cork wood oxide residue.
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.
Preparation of GB/T 601 chemical reagent standard titration solution
Laboratory use specifications and test methods GB/T 6682 Analysis
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Oxide residue oxidizingresidues
For cork bleaching effect of the bleaching product residue.
4 Method summary
Titration with thiosulfate to sulfide under acidic conditions is cork peroxide oxidation precipitated iodine test to obtain a residual amount of the oxide.
5 Sampling
Select at least eight cork representative sample for subsequent tests.
6 Reagents and materials
Unless otherwise specified, all reagents were of analytical grade should, in line with water as a water GB/T 6682 stipulated.
6.1 KI, AR.
6.2 heptamolybdate amines, AR.
6.3 of concentrated sulfuric acid, density 1.84g/mL.
6.4 acetic acid (99.5%).
6.5 potassium iodide solution (50g/L). Weigh 50g KI dissolved in water and diluted to 1000mL.
6.6 ammonium heptamolybdate solution (3%). weigh 3g heptamolybdate amine, volume 100mL.
6.7 sulfuric acid solution (25%). amount of 164mL of concentrated sulfuric acid slowly into approximately 700mL of water, cooled, diluted to 1000mL.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of SN/T 3939-2014_English be delivered?Answer: Upon your order, we will start to translate SN/T 3939-2014_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 3939-2014_English with my colleagues?Answer: Yes. The purchased PDF of SN/T 3939-2014_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+ countriesQuestion 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 [email protected]. 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.
|