Path:
Home >
GB/T >
Page475 > GB/T 2382-2015
Price & Delivery
US$129.00 · In stock · Download in 9 secondsGB/T 2382-2015: Sulphur dyes -- Determination of content of free sulphur
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See
step-by-step procedureStatus: Valid
GB/T 2382: Historical versions
| Std ID | Version | USD | Buy | Deliver [PDF] in | Title (Description) |
| GB/T 2382-2015 | English | 129 |
Add to Cart
|
3 days [Need to translate]
|
Sulphur dyes -- Determination of content of free sulphur
|
| GB/T 2382-2007 | English | 199 |
Add to Cart
|
2 days [Need to translate]
|
Sulphur dyes -- Determination of content of free sulphur
|
| GB/T 2382-1995 | English | 199 |
Add to Cart
|
2 days [Need to translate]
|
Determination of content of free sulphur in sulphur dyes
|
| GB 2382-1980 | English | 199 |
Add to Cart
|
2 days [Need to translate]
|
Determination of free sulfur content in sulfur dyes and sulfurized reduced dyes
|
Click to Preview a similar PDF
Basic data
| Standard ID | GB/T 2382-2015 (GB/T2382-2015) |
| Description (Translated English) | Sulphur dyes -- Determination of content of free sulphur |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | G55 |
| Classification of International Standard | 71.100.01; 87.060.10 |
| Word Count Estimation | 6,678 |
| Date of Issue | 2015-05-15 |
| Date of Implementation | 2015-12-01 |
| Older Standard (superseded by this standard) | GB/T 2382-2007 |
| Quoted Standard | GB/T 601; GB/T 603; GB/T 6682-2008; GB/T 8170-2008 |
| Regulation (derived from) | National Standard Announcement 2015 No. 15 |
| 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 method for the determination of free sulfur content of sulfur. This Standard applies to the determination of free sulfur content of sulfur. |
GB/T 2382-2015: Sulphur dyes -- Determination of content of free sulphur
---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.
Sulphur dyes. Determination of content of free sulphur
ICS 71.100.01; 87.060.10
G55
National Standards of People's Republic of China
Replacing GB/T 2382-2007
Determination of free sulfur content of sulfur
Issued on. 2015-05-15
2015-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 2382-2007 "Determination of free sulfur, sulfur content," compared with the GB/T 2382-2007, in addition to
Editorial changes outside the main technical changes are as follows.
--- Increased safety tips (see Chapter 4);
--- Modify the sample weight of the sample (see 441, 2007 edition 6.1.);
--- Modified extractive distillation operation reflux time (see 442, 2007 edition 6.2.);
--- Modify the course of the reaction amount of sodium sulfite (see 443, 2007 edition 6.3.);
--- Modify the dosage titration formaldehyde solution (see 444, 2007 edition 6.4.);
--- Increasing the allowable difference (see 4.4.4).
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. Zhejiang Changzheng Chemical Co., dye State Quality Supervision and Inspection Center, Shenyang Chemical Research Institute Co., Ltd.
Drafters of this standard. Long Yan, Gao new, Jin Yonghui, Kiran Qin, Wang Yong.
This standard replaces the previous editions of the standard.
--- GB 2382-1980, GB/T 2382-1995, GB/T 2382-2007.
Determination of free sulfur content of sulfur
1 Scope
This standard specifies the method for the determination of free sulfur content of sulfur.
This standard applies to the determination of free sulfur content of sulfur.
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
GB/T 603 chemical reagent in test methods - Preparations with
Laboratory use specifications and test methods GB/T 6682-2008 Analysis
GB/T 8170-2008 revised value represents about rules and limit values \u200b\u200band judgment
3 Principle of Measurement
Extraction with an organic solvent free from sulfur in the sulfur dye, and then the organic solvent was distilled off, the residue was then reacted with sodium sulfite, with
Iodine titration standard solution titration. Standard iodine titration solution free sulfur content is calculated according to consumption.
S Na2SO3 → Na2S2O3
2Na2S2O3 I2 → 2NaI Na2S4O6
4 Determination
Warning --- volatile organic solvent used in this standard is harmful to human health and the Flammable vapor can form explosive mixtures with air,
It should be performed in a fume hood, and prevent contact with open flame.
4.1 General provisions
Unless otherwise specified, use only recognized as analytical reagents and GB/T 6682-2008 specified in the third grade water. Test used in the standard
Quasi titration solution and indicator, did not indicate when the other requirements, according to GB/T 601 and GB/T 603 requirements Preparation and calibration. test
The results of the determination of GB/T 8170-2008 4.3.3 Rounding the value comparison method.
4.2 Reagents and solutions
4.2.1 filter. rapid qualitative filter paper.
4.2.2 toluene.
4.2.3 Anhydrous sodium sulfite.
4.2.4 acetic acid solution. 36% (mass fraction).
4.2.5 Formaldehyde solution. 37% to 40% (by mass).
4.2.6 standard iodine titration solution. c 12I2
÷ = 0.1mol/L.
...
