SN/T 1337.2-2003 English PDF

US$239.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 1337.2-2003: Methods for chemical analysis of titanium concentrate for import and export. Determination of chromium sesquioxide content
Status: Obsolete

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1337.2-2003	239	Add to Cart	3 days	Methods for chemical analysis of titanium concentrate for import and export. Determination of chromium sesquioxide content	Obsolete

Similar standards

YS/T 231   YS/T 254.1   GB/T 17413.1   SN/T 5693   SN/T 3916   SN/T 3012   

Basic data

Standard ID: SN/T 1337.2-2003 (SN/T1337.2-2003)
Description (Translated English): Methods for chemical analysis of titanium concentrate for import and export. Determination of chromium sesquioxide content
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: D43
Word Count Estimation: 6,688
Date of Issue: 2003-08-18
Date of Implementation: 2004-02-01
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary: This standard specifies the import and export of titanium concentrates of chromium oxide content spectrophotometric method. This standard applies to imports of titanium concentrate chromium oxide content. Measuring range: 0. 01% to 0. 50%.

SN/T 1337.2-2003: Methods for chemical analysis of titanium concentrate for import and export. Determination of chromium sesquioxide content

---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.
Methods for chemical analysis of titanium concentrate for import and export.Determination of chromium sesquioxide content Book of the People's Republic of China Entry and Exit Inspection and Quarantine Import and export titanium concentrate chemical analysis method Determination of chromium oxide content Released on.2003-08-18 2004-02-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

SN/T 1337 "Chemical Analysis Method for Import and Export of Titanium Concentrate" is divided into the following two parts. --- Part 1. Determination of vanadium pentoxide content; --- Part 2. Determination of chromium oxide content. This part is the second part of SN/T 1337. This part is proposed and managed by the National Certification and Accreditation Administration. This section drafted by. Hainan Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this section. Cai Cuiqiao. This section is the first industry standard for entry-exit inspection and quarantine. Import and export titanium concentrate chemical analysis method Determination of chromium oxide content

1 Scope

This standard specifies the spectrophotometric method for the determination of chromium oxide in titanium concentrates. This standard applies to the determination of chromium oxide in the import and export of titanium concentrate. Measuring range. 0.01% to 0.50%.

2 Method summary

The sample is immersed in water after alkali fusion, and titanium, iron and most impurities are separated by precipitation and filtration, and vanadium and chromium enter the solution. At 0.1 mol/L In the sulfuric acid medium, hexavalent chromium and diphenylcarbazide form a soluble red-purple complex, which is measured at a wavelength of 540 nm in a spectrophotometer. Luminosity.

3 reagents

Unless otherwise stated, only analytically pure reagents and distilled or deionized water or water of comparable purity were used in the analysis. 3.1 Sodium hydroxide. 3.2 sodium peroxide. 3.3 Ethanol (95% by volume). 3.4 Sulfuric acid (1+5). 3.5 Diphenylcarbazide solution (2 g/L). 0.2 g of diphenylcarbazide was dissolved in 100 mL of acetone. Formulated when used. 3.6 Chromium trioxide standard solution 3.6.1 Chromium trioxide standard solution (0.1mg/mL). weigh 0.1936g of dichromic acid pre-baked at 150 ° C for 1 h and weighed to constant weight Potassium reference reagent, dissolved in water, transferred to a 1000mL volumetric flask, diluted with water to the mark and shaken. 3.6.2 Chromium trioxide standard solution (10μg/mL). Pipette 25.0mL of the above (3.6.1) solution into a 250mL volumetric flask for use Dilute the water to the mark and shake it. 3.7 p-nitrophenol indicator solution (1g/L).

4 instruments

Spectrophotometer.

5 sample

The sample shall be ground to a sieve of 74 μm (200 mesh) and dried at 105 ° C to 110 ° C for 2 h, then placed in a desiccator and cooled to room temperature for use.

6 Analysis steps

6.1 Sample quantity The sample was weighed to the nearest 0.1 mg according to the specifications in Table 1. ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of SN/T 1337.2-2003_English be delivered?

Answer: Upon your order, we will start to translate SN/T 1337.2-2003_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 1337.2-2003_English with my colleagues?

Answer: Yes. The purchased PDF of SN/T 1337.2-2003_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.