BS 1835-1991 Specification for 2-ethylhexan-1-ol for industrial use《工业用2-乙基-1-己醇规范》.pdf

1、BRITISH STANDARD BS 1835:1991 Specification for 2-ethylhexan-1-ol for industrial useBS1835:1991 This British Standard, having been prepared under the directionof the Chemicals Standards Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 28June1991 BSI 11

2、-1999 First published February1952 Second edition March1970 Third edition June1991 The following BSI references relate to the work on this standard: Committee reference CIC/51 Draft for comment 90/56870 DC ISBN 0 580 19655 0 Committees responsible for this British Standard The preparation of this Br

3、itish Standard was entrusted by the Chemicals Standards Policy Committee (CIC/-) to Technical Committee CIC/51, upon which the following bodies were represented: British Pharmacopoeia Commission British Society of Perfumers Chemical Industries Association Ministry of Defence Oil and Colour Chemists

4、Association Royal Society of Chemistry Solvents Industry Association Ltd. Amendments issued since publication Amd. No. Date CommentsBS1835:1991 BSI 11-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Description 1 3 Sampling and size of sample 1 4 Colour 1 5 Den

5、sity 1 6 Distillation range 1 7 Water content 1 8 Ash 1 9 Acidity 1 10 Aldehydes and ketones 1 11 Colour after treatment with sulphuric acid 1 12 Total alcohols content 1 Publication(s) referred to Inside back coverBS1835:1991 ii BSI 11-1999 Foreword This British Standard, which has been prepared un

6、der the direction of the Chemicals Standards Policy Committee, supersedes BS1835:1970, which is withdrawn. The principal differences between this standard and the1970 edition are as follows. a) The requirements for distillation range, in terms of the initial boiling point and the dry point, have bee

7、n 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 d) The requirement for relative density has been replaced by one for density at20

8、 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 does not

9、 of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 and2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will

10、be indicated in the amendment table on the inside front cover.BS1835:1991 BSI 11-1999 1 1 Scope This British Standard specifies requirements for 2-ethylhexan-1-ol suitable for industrial purposes. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2

11、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 CH 3 CH 2 CH 2 CH 2 CH(C 2 H 5 )CH 2 OH. 3 Sampling and size of sample A sample of not less than1L shall be taken in accordance with BS4583

12、. 4 Colour The colour of the material shall not exceed10Hazenunits when measured by the method described in BS5339. 5 Density The density of the material at20 C, measured by the method described in BS4522, shall be not lower than0.832g/mL and not higher than0.834g/mL. 6 Distillation range When the m

13、aterial is distilled by the method described in BS4591, modified as specified in BS4583, the initial boiling point at101.3kPa pressure shall be not lower than182.0 C and the dry point at101.3kPa pressure shall be not higher than185.0 C. 7 Water content The material shall not contain more than0.10% (

14、m/m) of water when determined by themethod described in clause2 of BS2511:1970 using20mL of the material. 8 Ash The material shall not leave more than0.010% (m/m) of ash when determined by themethod described in BS4583. 9 Acidity The acidity of the material, calculated as acetic acid (CH 3 COOH), sh

15、all not exceed0.010% (m/m) (equivalent to an acid value of0.094) when determined by the method described in BS4583. 10 Aldehydes and ketones The material shall not contain more than0.010% (m/m) of aldehydes and ketones, calculated as carbonyl (CO), when determined by the method described in BS4583.

16、11 Colour after treatment with sulphuric acid The colour of the material after treatment with sulphuric acid shall not exceed50 Hazen units when measured by the method described in BS4583. 12 Total alcohols content The material shall contain not less than98.8% (m/m) and not more than101.4% (m/m) tot

17、al alcohols, calculated as octyl alcohols (C 8 H 17 ), when determined by the method described in BS4583.2 blankBS1835:1991 BSI 11-1999 Publication(s) referred to BS 2511, Methods for the determination of water (Karl Fischer method). BS 4522, Method for determination of absolute density at20 C of li

18、quid 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, Method of measurement of colour in Hazen units (platinum-cobalt s

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