1、Special-boiling-point spirit Requirements and testing ICs 75.160.20 Spezialbenzine - Siedegrenzenbenzine - Anforderungen DIN 51631 - Supersedes January 1988 edition. In keeping with current practice in standards published by the International Organization for Standardization (ISO), a comma has been
2、used throughout as the decimal marker. Foreword This standard has been prepared by Technical Committee Anforderungen an Spezialbenzine, Testbenzine, Lsemittel of the Normenausschuss Materialprfung (Materials Testing Standards Committee). Amendments This standard differs from the January 1988 edition
3、 as follows: a) The benzene, aromatics and n-hexane contents have been specified. b) Requirements regarding the corrosive effect of special-boiling-point spirit on copper and the olefins content are no longer specified. c) References have been updated. Previous editions DIN 51 631 : 1956-04, 1959-01
4、, 1971 -04, 1976-6, 1981 -1 1, 1987-08, 1988-01. 1 Scope This standard specifies requirements for special-boiling-point spirit that is commonly used as solvent, extractant or cleansing agent. 2 Normative references This standard incorporates, by dated or undated reference, provisions from other publ
5、ications. These normative references are cited at the appropriate places in the text, and the titles of the publications are listed below. For dated references, subsequent amendments to or revisions of any of these publications apply to this standard only when incorporated in it by amendment or revi
6、sion. For undated references, the latest edition of the publication referred to applies. DIN 51 413-9 Testing of liquid petroleum products by gas chromatography - Determining the total aromat- ics and benzene contents by column chromatography DIN 51 751 Determining the distillation characteristics o
7、f liquid petroleum products DIN 531 72 Determining the residue on evaporation of solvents for paints, varnishes and similar coating materials Continued on page 2. Translation by DI N-Sprachendienst. In case of doubt, the German-language original should be consulted as the authoritative text. No pari
8、 of this translation may be reproduced without the prior permission of V Deutsches Institut fr Nonung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, s the exclusive right of sale for German Standards (DIN-Nonen). Ref. No. DIN 51631 : 1999-0 English price group 05 Sales No. 0105 07.01 Page
9、2 DIN 51631 : 1999-04 Property Colour (Pt/Co colour index) DIN EN IS0 4259 Petroleum products - Determination and application of precision data in relation to meth- ods of test (IS0 4259 : 1992 + Corr. 1 : 1993) DIN IS0 6271 Clear liquids - Estimation of colour by the platinum-cobalt scale (IS0 6271
10、 : 1997) IS0 1998-1 : 1998 Petroleum industry - Terminology - Part 1 : Raw materials and products ASTM D 51 34-98 Test method for detailed analysis of petroleum naphtas through n-nonane by capillary gas chromatography Verordnung ber Anlagen zur Lagerung, Abfllung und Befrderung brennbarer Flssigkeit
11、en zu Lande (German Regulation on the storage, handling and transport by land of flammable liquids), as of 20 December 1996, BGBI. (German Federal Law Gazette) I, 1997, No. 15, p. 447 Verordnung zum Schutz vor gefhrlichen Stoffen (German Regulation on dangerous substances and materials), as of 15 No
12、vember 1999, BGBI. I, No. 52, p. 2233 ff. Requirement for spirit of type Testing as in 1 12 13 up to 20 DIN IS0 6271 3 Concept Special-boiling-point spirit Fraction of petroleum naphtha having a narrow distillation range and aflash point below 21 “C, specially treated for particular applications (qu
13、oted from IS0 1998-1). Special-boiling-point spirit is classified into three types (type 1, 2 and 3). Initial boiling point, in “C Min. Final boiling point, in “C Max. Distillation characteristics 4 Designation Designation of a type 2 special-boiling-point spirit: 1 O0 60 80 95 110 140 DIN 51 751 Sp
14、ecial-boiling-point spirit DIN 51631 - 2 Aromatics content, in g/l O0 g n-hexane content, in g/l O0 g 5 Requirements and testing Special-boiling-point spirit shall be free from undissolved water at 15 “C and any foreign matter (as determined visually). Table 1: Requirements to be met by special-boil
15、ing-point spirits Less than 02 0,2 DIN 51 41 3-9) 0,1 Less than 5 ASTM D 51 342) I Benzene content, in g/l O0 g I Less than 0,l I DIN 51413-9) I I Residue on evaporation, in mg/l O0 mi I up to 5 I DIN53172 I I Smell I Mild I I I) Other, equivalent gas chromatographic methods may also be used for det
16、ermining the benzene content. 2, Obtainable from Beuth Verlag GmbH, Auslandsnormenverkauf, Burggrafenstrasse 6,10787 Berlin, Germany. DIN EN IS0 4259 is to be applied for verifying compliance of special boiling point spirit with the requirements specified in this standard. 6 Safety instructions When using special-boiling-point spirits in accordance with this standard, the relevant safety regulations are to be complied with (e.g. Verordnung ber Anlagen zur Lagerung, Abfllung und Befrderung brennbarer Flssigkeiten zu Lande, Verordnung zum Schutz vor gefhrlichen Stoffen).
