BS 5707-1997 Specification for preparations of wood preservatives in organic solvents《有机溶剂的木材防腐剂制备规范》.pdf

1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS 5707 : 1997 ICS 71.100

2、.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Specification for Preparations of wood preservatives in organic solventsBS 5707 : 1997 This British Standard, having been prepared under the direction of the Sector Board for Building and Civil Engineering, was published unde

3、r the authority of the Standards Board and comes into effect on 15 May 1997 BSI 1997 The following BSI references relate to the work on this standard: Committee reference B/515 Draft for comment 96/121228 DC ISBN 0 580 27011 4 Amendments issued since publication Amd. No. Date Text affected Committee

4、s responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee B/515, Wood preservation, upon which the following bodies were represented: British Telecommunications plc British Wood Preserving and Damp-proofing Association Chemical Industries A

5、ssociation Creosote Council Department of the Environment (Building Research Establishment) Timber Research and Development Association Timber Trade Federation Wood Panel Industries Federation The following bodies were also represented in the drafting of the standard, through subcommittees and panel

6、s: Association of Consulting Scientists ITRI Ltd. Ministry of DefenceBS 5707 : 1997 BSI 1997 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 References 1 3 Definitions 1 4 Active ingredients 1 5 Solutions for general purpose applications, including timber that is to

7、 be painted 2 6 Pentachlorophenol in heavy oil for use on timber that is not to be painted 4 Annexes A (informative) Guidance on methods of treatment 5 B (informative) Determination of freedom from bloom and tack 6 C (normative) Determination of the penetration factor 6 Tables 1 Minimum concentratio

8、n of fungicides and type designation 3 2 Minimum concentration of insecticides and type designation 3 3 Distillation characteristics of clause 5 solvents 3 4 Distillation characteristics of clause 6 solvents 4 List of references Inside back coverii BSI 1997 BS 5707 : 1997 Foreword This revision of B

9、S 5707 has been prepared by Technical Committee B/515. This standard supersedes BS 5707 : Parts 1, 2 and 3, which are withdrawn. This revision takes account of European Standards on wood preservation produced by CEN Technical Committee CEN/TC38 and is produced in a single part, combining the specifi

10、cations for preservative solutions and providing guidance on suitable methods of treatment in annex A. Consideration was given to the inclusion of a requirement for the compatibility with paint. However, it was not found possible to include a test suitable to represent the many different painting pr

11、actices in use. Similarly, no test is available that gives generally useful information on the effectiveness of water repellents, which are often included in the solutions specified in this standard. CAUTION. Attention is drawn to the Health and Safety at Work etc. Act 1974, and the need for ensurin

12、g that the methods specified in this British Standard are carried out with suitable precautions. The procedures described in this British Standard are intended to be carried out by appropriately qualified and experienced persons or other suitably trained and/or supervised personnel. Normal safety pr

13、ecautions should be used throughout the use of the methods. Materials conforming to this specification and used as a wood preservative require government approval under the Control of Pesticides Regulations 1986 (SI 1510) before they can be sold, supplied, stored, advertised or used in the United Ki

14、ngdom. Compliance with a British Standard 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 to 8, an inside back cover and a back cover. BSI 1997 1 BS 5707 : 1997 1 Scope This British Stan

15、dard specifies requirements for preparations of chemicals in organic solvents intended for application to timber to preserve it against attack in service by wood-destroying fungi and/or insects. These preparations are not suitable for all purposes, and reference should be made to commodity standards

16、 or codes of practice for information about their suitability for any particular purpose. NOTE. Coloured preparations, for example those containing dyes or pigments, may not be suitable for use with timber that is to be painted. Pentachlorophenol in heavy oil cannot be used with timber that is to be

17、 painted or used in domestic dwellings. Specific advice regarding suitability should be obtained from the product supplier. This standard includes those formulations that are used generally for pretreatment or maintenance (preventative) procedures. It does not address formulations for use in remedia

18、l (curative) treatments. 2 References 2.1 Normative references This British Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are made at the appropriate places in the text and the cited publications are listed on the inside back cov

19、er. For dated references, only the edition cited applies; any subsequent amendments to or revisions of the cited publication apply to this British Standard only when incorporated in the reference by amendment or revision. For undated references, the latest edition of the publication referred to appl

20、ies, together with any amendments. 2.2 Informative references This British Standard refers to other publications that provide information or guidance. Editions of these publications current at the time of issue of this standard are listed on the inside back cover, but reference should be made to the

21、 latest editions. 3 Definitions For the purposes of this British Standard the following definitions apply. 3.1 bloom Crystals or other visible deposits from a preservative remaining on the surface of treated wood as a result of evaporation of solvent. 3.2 tack Perceived stickiness on the surface of

22、wood impregnated with a preservative following evaporation of solvent. 4 Active ingredients NOTE. Methods of analysis for some of the active ingredients defined in clause 4 can be found in Parts of BS 5666. 4.1 Acypetacs zinc. The zinc salt of a mixture of C 8 to C 10 linear and branched chain satur

23、ated aliphatic carboxylic acids; the branched chain acids predominating and consisting of equal parts by weight of: a) acids in which the main chain is dialkyl-substituted on the second carbon atom; and b) acids in which the second carbon atom is either unsubstituted or monoalkyl-substituted. NOTE.

24、Both acids may be further alkyl-substituted on the third or higher carbon atoms. The molecular weight of the mixture of acids lies between 157 and 171. The total zinc content is a minimum of 20.0 % (m/m) and purity is a minimum of 99 % (m/m). 4.2 Copper naphthenate. A mixture of the copper salts of

25、naturally-occurring naphthenic acids (naturally occurring carboxylic acids extracted from petroleum oils), conforming to BS 3769 : 1964. NOTE. Commercial products are available with copper contents of 6%(m /m ) and 8 % (m/m). 4.3 Cypermethrin (C 22 H 19 NCl 2 O 3 ). A yellow viscous liquid, essentia

26、lly a mixture of the isomers of a-cyano-3-phenoxybenzyl-2,2-dimethyl-3- (2,2-dichlorovinyl)-cyclopropane carboxylate having an isomer mix of a minimum of 35 % (m/m) cis isomers and a maximum of 65 % (m/m) trans isomers with a total isomer content of not less than 90 % (m/m). 4.4 Lindane (C 6 H 6 Cl

27、6 ). A white crystalline solid containing not less than 99.5 % (m/m) of the g-isomer of 1,2,3,4,5,6-hexachlorocyclohexane. 4.5 Pentachlorophenol (C 6 Cl 5 OH). Total chlorophenol content of not less than 96 % (m/m), expressed as pentachlorophenol, of which not less than 84 % (m/m) is pentachlorophen

28、ol and not more than 10 % (m/m) tetrachlorophenols, and free from 2,3,7,8-tetrachlorodibenzo-p-dioxin isomers to a detection limit of 10 27 %( m / m ). The total content of hexachlorodibenzo-p-dioxins is less than 43 10 24 %(m /m ). The product shall not contain more than 0.5 % (m/m) of material ins

29、oluble in a sodium hydroxide solution (5 g NaOH in 100 ml water) when tested according to the method in annex B of BS 3175 : 1959. NOTE. For the analysis of dioxin concentrations, methods published by the USA Environmental Protection Agency can prove suitable. Refer to US EPA Method 1613 1.2 BSI 199

30、7 BS 5707 : 1997 4.6 Pentachlorophenyl laurate. The ester of pentachlorophenol conforming to 4.5 and dodecanoic (lauric) acid (C 11 H 23 COOH). The dodecanoic acid can contain other fatty acids but shall have a mean molecular weight of 200 and shall be an oily liquid at room temperature. The final p

31、roduct shall conform to the dioxin impurity limits given in 4.5. 4.7 Permethrin (C 21 H 20 Cl 2 O 3 ). A colourless to pale brown viscous liquid or semi-solid, essentially a mixture of the isomers of methyl 3-phenoxyphenyl-3-(2,2-dichlorovinyl)- 2,2-dimethylcyclopropane carboxylate. Acceptable isome

32、r mixes are: a) 25 %/75 % cis/trans (28 % max. cis, 65 % min. trans) with a total minimum isomer content of 93 % (m/m); b) 40 %/60 % cis/trans (35 % to 45 % cis,5 5% to 65 % trans) with a total minimum isomer content of 92 % (m/m); c) 50 %/50 % cis/trans (45 % min. cis, 55 % max. trans) with a total

33、 minimum isomer content of 90 % (m/m). 4.8 Propiconazole (C 15 H 17 Cl 2 N 3 O 2 ). 1-(29,49-dichlorophenyl)-4-propyl-1,3- (dioxolan-2-ylmethyl)-1H-1,2,4-triazole, a light to dark yellow, clear viscous liquid. Purity shall not be less than 90 % (m/m). 4.9 Tebuconazole (C 16 H 22 ClN 3 O). a-2-(4-chl

34、orophenyl)ethyl-a-(1,1-dimethylethyl)-1H- 1,2,4-triazole-1-ethanol. A white to pale brown crystalline powder, melting point 103 C approx., containing not less than 93 % (m/m) tebuconazole. 4.10 TCMTB (C 9 H 6 N 2 S 3 ). 2-(thiocyanomethylthio)benzothiazole, usually available as a red/orange to dark

35、brown liquid which can be very viscous and which crystallizes depending on the concentration. NOTE. Commercial products are available at TCMTB concentrations of 60 % (m/m) and 80 % (m/m). 4.11 Tri-n-butyltin oxide (C 4 H 9 ) 3 Sn 2 O), containing a minimum of 95 % (m/m) bis(tri-n-butyltin) oxide and

36、 38.2 % (m/m) tin. 4.12 Tri-n-butyltin naphthenate. The ester of bis(tri-n-butyltin) oxide and naturally-occurring naphthenic acids (naturally occurring carboxylic acids extracted from petroleum oils). The product shall contain a minimum of 92 % (m/m) tri-n-butyltin naphthenate and a minimum of 21.0

37、 % (m/m) tin. The product shall not contain more than 0.1 % (m/m) free bis(tri-n-butyltin) oxide. 4.13 Trihexylene glycol biborate (C 18 H 36 O 6 B 2 ). A clear, colourless to pale straw liquid, boiling point 314 C to 326 C, containing not less than 5.6 % (m/m) boron (equivalent to 32 % (m/m) boric

38、acid). 4.14 Zinc naphthenate. A mixture of the zinc salts of naturally-occurring naphthenic acids (naturally occurring carboxylic acids extracted from petroleum oils). The product shall conform to BS 3770 : 1964. NOTE. Commercial products are available with zinc contents of 6%(m /m ), 8 % (m/m) and

39、12 % (m/m). 4.15 Zinc versatate. The zinc salt of a mixture of saturated aliphatic carboxylic acids, of which 95 % is C 10 branched acids. The acids shall be dialkyl substituted on the second carbon atom and can be further substituted on the third or higher carbon atoms. The molecular weight of the

40、mixture of acids shall lie between 170 and 180. NOTE. Commercial products are available with zinc concentrations ranging from 6 % (m/m)t o1 6%( m / m ). 5 Solutions for general purpose applications, including timber that is to be painted 5.1 Composition NOTE. Co-solvents and other ingredients, for i

41、nstance water repellents, pigments and dyes, can be added to the basic mixture of solvent and fungicide and/or insecticide providing that the resultant solution conforms to 5.2. 5.1.1 Fungicides and insecticides The fungicides and insecticides used in these formulations shall be as specified in tabl

42、es 1 and 2. The solutions shall contain not less than the concentrations of the fungicides and/or insecticides included in tables 1 and 2. 5.1.2 Solvent The solvent shall be a petroleum distillate or a coal tar distillate or a mixture of these. The distillation characteristics of the solvent, when d

43、etermined as described in BS 7392, shall be as specified in table 3. BSI 1997 3 BS 5707 : 1997 Table 1. Minimum concentration of fungicides and type designation Type number Fungicide(s) Minimum concentration %( m / m ) F1 pentachlorophenol 5.0 F2 tri-n-butyltin oxide 1.0 F3 pentachlorophenol/ tri-n-

44、butyltin oxide 1.75 pentachlorophenol/ 0.44 tri-n-butyltin oxide F4 zinc naphthenate/ pentachlorophenol 1.8 zinc/ 2.0 pentachlorophenol F5 zinc naphthenate/ pentachlorophenol 1.0 zinc/ 5.0 pentachlorophenol F6 pentachlorophenyl laurate 6.25 F7 copper naphthenate 2.0 copper F8 copper naphthenate 2.75

45、 copper F9 acypetacs zinc 14.5 F10 zinc versatate 2.9 zinc F11 trihexylene glycol biborate 3.5 F12 tri-n-butyltin naphthenate 1.8 F13 tebuconazole 0.75 F14 TCMTB 2.25 TCMTB F15 propiconazole 1.0 NOTE 1. The minimum concentrations listed in the table refer to the commercial product not to the pure ac

46、tive ingredient. NOTE 2. Marketed products containing these minimum concentrations are not necessarily of equal effectiveness. Table 2. Minimum concentration of insecticides and type designation Type number Insecticide Minimum concentration %( m / m ) N1 lindane 0.5 N3 permethrin 0.1 N4 cypermethrin

47、 0.05 NOTE 1. Type number N2 referred to dieldrin (which is now prohibited) in BS 5707 : Part 1 : 1979. To avoid confusion, this type number has not been used for the insecticides currently approved for use as wood preservatives. NOTE 2. The minimum concentrations refer to the products, not the pure

48、 active ingredients, as defined in clause 4. NOTE 3. Marketed products containing these minimum concentrations are not necessarily of equal effectiveness. Table 3. Distillation characteristics of clause 5 solvents Property Requirement Initial boiling point 135 C min. Fraction recovered below 155 C 1

49、0 % (V/V) max. Fraction recovered below 250 C 90 % (V/V) max. Fraction recovered below 270 C 98 % (V/V) max.4 BSI 1997 BS 5707 : 1997 5.2 Requirements for the solution NOTE. For certain uses, freedom from bloom and tack or a minimum level of bloom and tack can be specified. Annex B provides a test method whereby the amount of bloom and tack likely to develop from the use of a preservative preparation can be assessed. 5.2.1 Appearance The solution shall be free from visible extraneous matter. 5.2.2 Flashpoint The flashpoint of the solution shall be not lower than 32 C