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1、BRITISH STANDARD BS 1835:1991 Specification for 2-ethylhexan-1-ol for industrial use Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:04:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1835:1991 This British Standard, having been prepared under the direction of the Chemicals Standards Poli
2、cy Committee, was published under the authority of the Standards Board and comes into effect on 28 June 1991 BSI 11-1999 First published February 1952 Second edition March 1970 Third edition June 1991 The following BSI references relate to the work on this standard: Committee reference CIC/51 Draft
3、for comment 90/56870 DC ISBN 0 580 19655 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Chemicals Standards Policy Committee (CIC/-) to Technical Committee CIC/51, upon which the following bodies were represented: British Pharmacopoei
4、a Commission British Society of Perfumers Chemical Industries Association Ministry of Defence Oil and Colour Chemists Association Royal Society of Chemistry Solvents Industry Association Ltd. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov
5、 24 08:04:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1835:1991 BSI 11-1999i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Description1 3Sampling and size of sample1 4Colour1 5Density1 6Distillation range1 7Water content1 8Ash1 9Acidity1 10Aldehydes and ketones1 11C
6、olour after treatment with sulphuric acid1 12Total alcohols content1 Publication(s) referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:04:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1835:1991 ii BSI 11-1999 Foreword This British Standard, which has been prepa
7、red under the direction of the Chemicals Standards Policy Committee, supersedes BS 1835:1970, which is withdrawn. The principal differences between this standard and the 1970 edition are as follows. a) The requirements for distillation range, in terms of the initial boiling point and the dry point,
8、have been made more stringent. b) The requirement for acidity has been made more stringent and is now expressed as a percentage by mass of acetic acid. c) The requirement for aldehydes and ketones has been made more stringent. d) The requirement for relative density has been replaced by one for dens
9、ity at 20 C. e) The requirement for total alcohols content is now expressed as a percentage by mass. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard
10、 does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporate
11、d. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:04:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1835:1991 BSI 11-19991 1 Scope This British Standard specifies requirements for 2-ethylhexan-1-ol suitable for ind
12、ustrial purposes. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Description The material shall be clear and free from matter in suspension, as assessed by visual inspection, and shall consist essentially of 2-ethylhexan-1-ol CH3CH2CH2CH2CH(C2H
13、5)CH2OH. 3 Sampling and size of sample A sample of not less than 1 L shall be taken in accordance with BS 4583. 4 Colour The colour of the material shall not exceed 10 Hazen units when measured by the method described in BS 5339. 5 Density The density of the material at 20 C, measured by the method
14、described in BS 4522, shall be not lower than 0.832 g/mL and not higher than 0.834 g/mL. 6 Distillation range When the material is distilled by the method described in BS 4591, modified as specified in BS 4583, the initial boiling point at 101.3 kPa pressure shall be not lower than 182.0 C and the d
15、ry point at 101.3 kPa pressure shall be not higher than 185.0 C. 7 Water content The material shall not contain more than 0.10 % (m/m) of water when determined by the method described in clause 2 of BS 2511:1970 using 20 mL of the material. 8 Ash The material shall not leave more than 0.010 % (m/m)
16、of ash when determined by the method described in BS 4583. 9 Acidity The acidity of the material, calculated as acetic acid (CH3COOH), shall not exceed 0.010 % (m/m) (equivalent to an acid value of 0.094) when determined by the method described in BS 4583. 10 Aldehydes and ketones The material shall
17、 not contain more than 0.010 % (m/m) of aldehydes and ketones, calculated as carbonyl (CO), when determined by the method described in BS 4583. 11 Colour after treatment with sulphuric acid The colour of the material after treatment with sulphuric acid shall not exceed 50 Hazen units when measured b
18、y the method described in BS 4583. 12 Total alcohols content The material shall contain not less than 98.8 % (m/m) and not more than 101.4 % (m/m) total alcohols, calculated as octyl alcohols (C8H17), when determined by the method described in BS 4583. Licensed Copy: sheffieldun sheffieldun, na, Fri
19、 Nov 24 08:04:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 blank Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:04:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1835:1991 BSI 11-1999 Publication(s) referred to BS 2511, Methods for the determination of water (Karl Fischer method). BS
20、 4522, Method for determination of absolute density at 20 C of liquid chemical products for industrial use. BS 4583, Methods of test for higher alcohols for industrial use. BS 4591, Method for determination of distillation characteristics of organic liquids (other than petroleum products). BS 5339,
21、Method of measurement of colour in Hazen units (platinum-cobalt scale) of liquid chemical products. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:04:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1835:1991 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI i
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