GB/T 27844-2011Chemicals -- Solution/extraction behaviour of polymers in water (English PDF)
化学品 聚合物在水中的溶解/析出特性
This is a limited preview
Buy now to download the full PDF (5 pages)
Need quotation for your management?
Get a formal quotation for GB/T 27844-2011 in 30 minutes.
Issued by
Standardization Administration of China
Level / Type
National · Recommended
Issue date
December 30, 2011
Implementation date
August 1, 2012
Scope
GB/T 27844-2011 is the English-translated version of 化学品 聚合物在水中的溶解/析出特性.
GB/T 27844-2011 — This standard specifies the method for determination of the dissolution and release characteristics of the polymer in water. This standard applies to the determination of the polymer is dissolved in water and precipitation characteristics.
This standard does not apply to liquid polymers and polymer under this test condition occurs with water used in the reaction. The standard method is not applicable or not when available, the dissolution/precipitation of other methods should be used to study characteristics.
In this case, we need to give details of the methodology used and the use of reason.
Found what you need?
Document preview — GB/T 27844-2011
National Standard of the People's Republic of China
- ICS
- 13.300; 11.100
- Classification
- A 80
Issued by: Standardization Administration of China
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 PRINCIPLE OF THE METHOD
- 4 Method Description
- 4.1 Test device
- 4.2 Sample Preparation
- 4.3 Test procedure
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The Standards and Organisation for Economic Co-operation and Development (OECD) guidelines for chemical testing methods No.120 (2000) "polymer was dissolved in water Solutions/precipitation characteristics of the "same (in English) of technical content.
This standard made the following editorial changes.
--- Delete the original text of the Background;
--- Added "Normative References" section, where GB/T 21845 and OECDNo.105.1995 technical content the same, GB/T 22236 and DIN53733. 1976 technical content is the same.
This standard is managed by the National Standardization Technical Committee chemicals dangerous (SAC/TC251) and focal points.
This standard was drafted. Chinese Academy of Inspection and Quarantine, China Chemical Technology Development Center of Jiangsu Coal Chemical Engineering Research Institute Limited, the Chemical Institute of Standardization.
1 Scope
This standard specifies the method for determination of the dissolution and release characteristics of the polymer in water.
This standard applies to the determination of the polymer is dissolved in water and precipitation characteristics.
This standard does not apply to liquid polymers and polymer under this test condition occurs with water used in the reaction. The standard method is not applicable or not when available, the dissolution/precipitation of other methods should be used to study characteristics. In this case, we need to give details of the methodology used and the use of reason.
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.
GB/T 21845 Chemicals water solubility test GB/T 22236 plastic products inspection test pulverized
3 PRINCIPLE OF THE METHOD
Dissolved in an aqueous medium in the polymer/precipitated by the following properties are modified flask method (see GB/T 21845) assay. For a these particular polymers, such as emulsion polymers, prior to the adoption of this standard should have the initial preparation.
4 Method Description
4.1 Test device
Apparatus used in the test are.
--- Grinding apparatus, for example, be made aware of the mill product particle size (see GB/T 22236);
--- Temperature oscillation device;
--- Membrane filter system;
---Analytical Instruments;
--- Standard sieve.
4.2 Sample Preparation
With the appropriate device will have a representative sample ground so that the particle size is reduced to 0.125mm ~ 0.25mm, in order to ensure the stability of the sample Set, the grinding process to be cooled. Substance having rubber-like properties can be found in the liquid nitrogen temperature (see GB/T 22236) under ground.
If this does not achieve the desired particle size, particle size should be reduced as far as possible, this time should be reported in the test results. In the test report , It should be explained pulverized sample before testing the method of storage.
4.3 Test procedure
4.3.1 Procedure
Weigh 10g sample 3 parts of the test substance, and were placed in three containers with glass stoppers, each added 1000mL of water. If confirmed
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 5 pages — is available in the English PDF.
Referenced standards
How to Download GB/T 27844-2011
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
GB/T 21845-2008 — Chemicals -- Water solubility test
GB/T 22236-2025 — Testing of plastics - Size reduction of plastic products for test purposes
GB/T 3402.2-2026 — Plastics - Homopolymer and copolymer resins of vinyl chloride - Part 2: Preparation of test samples and determination of properties
Secure payment via Stripe
Payments accepted
GB/T 27844-2011
$85.00