HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189760 (18 Oct 2025)

GB/T 2385-2007 English PDF

US$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 2385-2007: General method for the determination of crystallizing point dye intermediates
Status: Valid

GB/T 2385: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 2385-2007English209 Add to Cart 3 days [Need to translate] General method for the determination of crystallizing point dye intermediates Valid GB/T 2385-2007
GB/T 2385-1992English199 Add to Cart 2 days [Need to translate] Dye intermediates general method for the determination of crystallizing point Obsolete GB/T 2385-1992

PDF similar to GB/T 2385-2007


Standard similar to GB/T 2385-2007

GB/T 23978   GB/T 24164   GB/T 2374   GB/T 2394   GB/T 2391   GB/T 2384   

Basic data

Standard ID GB/T 2385-2007 (GB/T2385-2007)
Description (Translated English) General method for the determination of crystallizing point dye intermediates
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G55
Classification of International Standard 71.100.01; 87.060.10
Word Count Estimation 8,870
Date of Issue 2007-11-28
Date of Implementation 2008-06-01
Older Standard (superseded by this standard) GB/T 2385-1992
Quoted Standard GB/T 629
Adopted Standard ISO 1392-1977, MOD
Regulation (derived from) China National Standard Approval Announcement2007 No.12 (Total No.112)
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 the crystalline dye intermediate point with a double casing method common methods. This standard applies to the determination of dye intermediates crystallization point of crystallization temperature in the range of -10��C ~ 150��C. This standard applies to the direct determination of the sample crystallization point also applies to the determination of the dried sample after crystallization point. If the sample to be dried and drying methods otherwise specified in the product standard.

GB/T 2385-2007: General method for the determination of crystallizing point dye intermediates

---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.
General method for the determination of crystallizing point dye intermediates ICS 71.100.01; 87.060.10 G55 National Standards of People's Republic of China Replacing GB/T 2385-1992 General method for the determination of crystallizing point of dye intermediates (ISO 1392. 1977, Determinationofcrystalizingpoint-Generalmethod, MOD) Posted 2007-11-28 2008-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This revised standard adopts ISO 1392. 1977 "Determination of crystallizing point --- General Methods." This standard and ISO 1392. 1977 differences are as follows. --- Standard format editorial changes; --- This standard applies to the determination within the range of -10 ℃ ~ 150 ℃ dye intermediates crystallization point, the scope of ISO 1392 is Determination of -50 ℃ ~ 250 ℃ crystallization point substance (in this standard in Chapter 1; ISO 1392. Chapter 1, 1977); --- This standard specifies the use Dewar, beakers used as the cooling bath and a hot tub, ISO 1392. 1977 using Dewar and thermal bath (this standard 6.1.7 and 6.1.8,6.1.9; ISO 1392. 1977 of 4.5,4.6,4.7); --- Coolant provisions of this standard is ice, ice saline, glycerol, water and air or other media, ISO 1392 dry ice - acetone, Ice or water (this standard 5.2; ISO 1392. 1977, 4.5); --- This standard simplifies the ISO 1392. specific provisions for sample drying process 1977 (ISO 1392. 1977 and 5.2.1 5.2.2.1 and 5.2.2.2; this standard 7.1); Stop --- This standard specifies the sample was cooled with stirring, crystallization occurs when stirred; ISO 1392. 1977 stipulates that from the start of cooling the sample The proceeds stirring without allowing liquid to extreme cold, after crystallization occurs if the temperature rises more than 1 ℃ ~ 2 ℃, should be re-measured (This standard is 7.3; ISO 1392. 1977 5.4). This standard replaces GB/T 2385-1992 "dye intermediates determination of crystallizing point - General method." This standard compared with GB/T 2385-1992 The main changes are as follows. --- Change the standard name is "common measurement method dye intermediate crystallization point"; --- Increased (Chapter 2 of this edition) "Normative references" chapter; --- Increased (3rd edition chapter) chapter "Terms and Definitions"; --- Modify the formula of full immersion thermometer measurement, increasing the formulas Bureau immersion thermometer measurement (1992 edition 7 Chapter; Chapter 8 of this edition); --- Increase in the content of the test report (Chapter 10 of this edition). The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee Dye (SAC/TC134) centralized. This standard was drafted. Shenyang Chemical Research Institute. The main drafters of this standard. Kiran Qin, Shen Jiong day. GB 2385 - 1980, 1992 second revision of GB/T 2385-1992. General method for the determination of crystallizing point of dye intermediates

1 Scope

This standard specifies the determination of crystallizing point of dye intermediates double cuff technique common methods. This standard applies to the determination of dye intermediates crystallization point of crystallization temperature in the range of -10 ℃ ~ 150 ℃. This standard applies to direct measurement sample crystallization point, is also applicable to the measurement sample dried after crystallization point. Are samples need to do Dry and dry methods in product standards separately.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 629 chemical reagent sodium hydroxide

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 The point means a liquid crystalline material during the cooling transition from liquid to solid phase transition temperature when. Principle 4 Liquid or melted material cooled at atmospheric pressure, when the temperature control from the liquid phase to a solid phase during the phase transition, the release of latent heat is observed The maximum temperature to maintain a certain stage of the crystallization point temperature.

5 Reagents and materials

5.1 Desiccant 5.1.1 anhydrous calcium chloride. AR. 5.1.2 Sodium hydroxide. shall comply with the provisions of GB T 629 /. 5.1.3 Molecular Sieve. size and type in the product standard specified. When used, subject to calcination at 550 ℃ 3h activated in a dry It is in the back. 5.2 Coolant 5.2.1 crushed ice and salt mixture. for the range of -10 ℃ ~ 0 ℃ cooling medium. 5.2.2 The mixture of crushed ice and water. for the range of 0 ℃ ~ 25 ℃ cooling medium. 5.2.3 Glycerin. for in the range of 25 ℃ ~ 150 ℃ cooling or heating medium. 5.2.4 air or water and other media to meet the requirements.

6 instruments and devices

6.1 Instrument 6.1.1 crystallization tube. outer diameter of about 25mm, length of 150mm ± 5mm. 6.1.2 Casing. diameter of about 28mm, length of 120mm ± 5mm, wall thickness 2mm.

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 2385-2007_English be delivered?

Answer: Upon your order, we will start to translate GB/T 2385-2007_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 2385-2007_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 2385-2007_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 [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.

Question 5: Should I purchase the latest version GB/T 2385-2007?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 2385-2007 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.