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GB/T 13255.2-2009 English PDF

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Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 13255.2-2009 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 13255.2-2009: Test methods of caprolactam for industrial use -- Part 2: Determination of crystallizing point
Status: Valid

GB/T 13255.2: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 13255.2-2009	189	Add to Cart	3 days	Test methods of caprolactam for industrial use -- Part 2: Determination of crystallizing point	Valid
GB/T 13255.2-1991	199	Add to Cart	2 days	Caprolactam for industrial use--Determination of crystallizing point	Obsolete

Similar standards

GB/T 6324.6 GB/T 7531 GB/T 6324.5 GB/T 13255.4 GB/T 13255.5 GB/T 13255.3

Basic data

Standard ID: GB/T 13255.2-2009 (GB/T13255.2-2009)
Description (Translated English): Test methods of caprolactam for industrial use -- Part 2: Determination of crystallizing point
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G15
Classification of International Standard: 71.080
Word Count Estimation: 8,856
Date of Issue: 2009-05-13
Date of Implementation: 2010-01-01
Older Standard (superseded by this standard): GB/T 13255.2-1991
Quoted Standard: GB/T 13255; GB/T 8170
Regulation (derived from): PRC National Standard Approval Announcement 2009 No.6 (Total No.146)
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
Summary: This standard specifies the determination of caprolactam industrial crystallization point.

GB/T 13255.2-2009: Test methods of caprolactam for industrial use -- Part 2: Determination of crystallizing point

---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.
Test methods of caprolactam for industrial use Part 2. Determination of crystallizing point ICS 71.080 G15 National Standards of People's Republic of China Replacing GB/T 13255.2-1991 Test methods of caprolactam for industrial use Determination of crystallizing point. Part 2 Posted 2009-05-13 2010-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 13255 "Industrial caprolactam test method" is divided into eight sections. --- Part 1. Determination of a 50% aqueous solution of chromaticity spectrophotometry; --- Part 2. Determination of crystallizing point; --- Part 3. Determination of permanganate absorption spectrophotometry value; --- Part 4. After distillation of volatile alkali content of titration; --- Part 5. 290nm wavelength measured absorbance; --- Part 6. Determination of acidity or alkalinity; --- Part 7. Determination of iron content; --- Part 8. Determination of cyclohexanone oxime content. This section GB/T 13255 Part 2. This Part replaces GB/T 13255.2-1991 "Determination of caprolactam industrial crystallization point." This section compared with the GB/T 13255.2-1991, the main changes are as follows. Chapter 7); --- Added "Report" (see Chapter 8). This part is proposed by the China Petroleum and Chemical Industry Association. This part of the National Standardization Technical Committee on Organic Chemistry Club (SAC/TC63/SC2) centralized. This section drafted by. China Petroleum & Chemical Corporation Baling Branch. The main drafters of this section. Zhao Jun red, Shenpei Zhi, Kuang Zhigang. This part of the standard replaces the previous editions as. GB/T 13255.2-1991. Test methods of caprolactam for industrial use Determination of crystallizing point. Part 2

1 Scope

GB/T 13255 provisions of this part of the industrial process measurement caprolactam crystallization point.

2 Normative references

The following documents contain provisions which, through reference GB/T 13255 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 8170 repair numerical representation about rules and limit values \u200b\u200band judgment

3 Method summary

The molten sample was observed during cooling of the temperature change, crystallization occurs when the maximum temperature observed and maintained for some time Constant, the temperature of crystallization point.

4 Instrument

4.1 Crystallization tube. diameter 25mm, wall thickness (1 ~ 2) mm, length 150mm. 4.2 outer protective tube. diameter 28mm, wall thickness (1 ~ 2) mm, length 120mm. 4.3 agitator. stainless steel wire system, the diameter of 1mm, more than 160mm long and has a diameter of about 20mm and at right angles to the axis of the ring. 4.4 Main thermometers. mercury thermometer glass rod, range (62 ~ 76) ℃, dividing the value of 0.1 ℃, long 300mm, full immersion and after Correction. 4.5 Auxiliary thermometer. glass rod mercury thermometer, range (0 ~ 50) ℃, dividing the value of 1 ℃. 4.6 vacuum bottle (see Figure 2). a glass, an inner diameter of 35mm, outside diameter 55mm, length 120mm, vacuum jacket. 4.7 glycerin bath. 1000mL beaker or other similar device can control the temperature (77 ~ 80) ℃. 4.8 asbestos rubber covers or other similar materials. Installation 5 Instrument 5.1 Main thermometer position. fixed with a rubber plug in the middle of crystallization mouth of the tube, the mercury at the bottom of the ball away from its crystalline bottom of the tube about 15mm. 5.2 Auxiliary thermometer Location. attached to the main thermometer, so that the mercury ball is located between the stopper at one point and the crystallization temperature at a point two minutes. 5.3 stirrer Location. drilling a hole in the stopper, the stirrer insert crystallization test tube, located between the main wall thermometer with the crystalline sample, three You can not collide. 5.4 outer protective tube position. fixed on the rubber cover asbestos holes, placed vertically glycerin bath. 5.5 Crystallization tube Location. means the outer protection tube. Step 6 Analysis When measured using a crystallization tube, a thermometer, a stirrer should be clean and dry. The laboratory sample mix, filled with crystalline tube, stopper tightly, and then placed in a bath of glycerol outer protective tube, in a temperature controlled bath glycerine ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 13255.2-2009_English be delivered?

Answer: Upon your order, we will start to translate GB/T 13255.2-2009_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 13255.2-2009_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 13255.2-2009_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.

Question 5: Should I purchase the latest version GB/T 13255.2-2009?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 13255.2-2009 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.