LY/T 1635-2005 PDF in English
LY/T 1635-2005 (LY/T1635-2005, LYT 1635-2005, LYT1635-2005)
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Wood preservatives
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LY/T 1635-2005: PDF in English (LYT 1635-2005) LY/T 1635-2005
LY
FORESTRY STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.100.50
B 71
Wood preservatives
木材防腐剂
ISSUED ON. AUGUST 16, 2005
IMPLEMENTED ON. DECEMBER 01, 2005
Issued by. State Forestry Administration of the People's Republic of China
Table of Contents
Foreword ... 3
Introduction ... 4
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 5
4 Water-borne wood preservatives ... 5
5 Organic solvent-based wood insect-resist agents ... 9
6 Organic solvent-based wood preservatives ... 9
7 Anti-mildew and anti-blushing agents ... 10
8 Product mark, packaging, transportation and storage of wood preservatives ... 10
Introduction
This Standard is not equivalent to the American Wood Preservers’ Association AWPA standard
2003 P5-02 Water-borne Wood Preservatives, AWPA 2003 P8-03 Organic Solvent-based Wood
Preservatives, Annex B Composition of Wood Preservatives and Annex C Registration Number
of Wood Preservatives of Australian AS/1604.1 Preservative Treatment Specification Part 1.
Sawn Timber and Logs, ACQ in Japanese Industrial Standard JIS K1570 Wood Preservatives
and so on. The content of effective ingredients in 4.1, 4.2, 4.3, 4.6 and 4.7 of this Standard refers
to AWPA 2003; the content of effective ingredients of ACQ-2, ACQ-3 and ACQ-4 in 4.4 refers to
ACQ-B, ACQ-C and ACQ-D of AWPA 2003, and the content of effective ingredients of ACQ-1
refers to ACQ-1 in JIS K1570. The content of effective ingredients of CuAz-1 and CuAz-2 in 4.5
refers to CBA-A and CA-B of AWPA 2003. Wood preservative oil uses YB/T 5168-2000 standard.
Other arsenic preparations in AWPA P5-02 are rarely used in foreign countries, so the application
effect is generally inferior to that of CCA-C, therefore, it is not included.
This Standard is the domestic standard relating to wood preservatives that is formulated for the
first time. The formulation of the standard lags behind the industry, particularly for water-borne
wood preservatives. The application of organic solvent-based wood preservative is fewer in
domestic at present, some basic research work need to be further improved, it is difficult to include
all the contents of the wood preservatives in a standard, and this Standard only lists the effective
ingredients of organic solvent-based wood preservatives. It is noted that the toxicity of
pentachlorophenol and sodium pentachlorophenate on human is larger, so it is not to be
recommended by this Standard. Before the formulation and revision of analysis methods of new
wood preservatives, technical indicators of organic solvent-based wood preservatives and
technical indicators of solvents, the following measures shall be used. the determination of copper,
chromium and arsenic in wood preservative can use atomic absorption spectrometry; it also can
adopt the titration or other methods in GB/T 50329-2002 Standard for Test Methods of Timber
Structures. The determination of DDAC, BAC, tebuconazole and cyproconazole uses high
pressure liquid chromatography (HPLC).
Wood Preservatives
1 Scope
This Standard specifies the ratio of effective ingredients of water-borne wood preservative, and
describes the content requirements for the effective ingredients in various forms (solid, paste or
solution). This Standard includes the effective ingredients of organic solvent-based wood insect-
resist agents, organic solvent-based wood preservatives, anti-mildew and anti-blushing agents.
This Standard applies to the production and use of wood preservatives.
2 Normative references
The articles contained in the following documents have become part of this document when they
are quoted herein. For the dated documents so quoted, all subsequent modifications (including
all corrections) or revisions made thereafter do not apply to this Standard. However, the parties
who reach an agreement according to this Standard are encouraged to study whether the latest
versions of these documents may be used. For the undated documents so quoted, the latest
versions (including all modification sheets) apply to this document.
GB/T 14019-1992 Glossary of terms used in wood preservation
GB 190 Packing symbol of dangerous goods
GB 3796-1999 General rule for packing of pesticides
GB 12475-1990 Antitoxic regulations for storage-transportation, marketing and use of
pesticides
3 Terms and definitions
For the purpose of this Standard, the terms and definitions given in GB/T 14019-1992 as well as
the following terms and definitions shall apply.
3.1 Effective ingredients
They are active ingredients in wood preservatives, which can inhibit the growing of wood-
decaying fungus, mold, staining fungi, insects and marine animals in the wood.
4 Water-borne wood preservatives
4.1 Copper, chromium and arsenic (CCA-C)
4.1.1 The composition of CCA-C is shown in Table 1, calculated according to 100% oxide.
as follows.
Copper. copper sulfate;
Hexavalent chromium. potassium dichromate or sodium dichromate, chromium trioxide;
The purity of raw material compounds providing the substances listed in 4.6.1 shall be equal or
greater than 95% according to the calculation of anhydrous substance; the pH value shall be 2.0
~ 3.9; the preservative shall be marked with the total content of ingredients listed in 4.6.1.
4.7 Copper citrate (CC)
4.7.1 The composition of CC is shown in Table 9.
Table 9 Composition of CC %
Effective ingredient Ratio
Copper (calculated by CuO) 62.3
Citric acid 37.7
Bivalent copper and citric acid shall be dissolved in the ammonia liquid, and the weight of
ammonia contained in the treating liquid shall be at least equal to 1.4 times of that of copper oxide.
4.7.2 The content requirements of solid, paste, concentrate or treating liquid are shown in Table
10.
Table 10 Content Requirements of All Compositions of CC %
Effective ingredient Ratio range
Copper (calculated by CuO) ≥ 59.2
Citric acid ≥ 35.8
The sum of the content of all compositions in Table 10 shall be 100%.
4.7.3 The purity of raw material compounds providing bivalent copper and citric acid shall be
equal or greater than 95% according to the calculation of anhydrous substance; the preservative
shall be marked with the content of ingredients listed in 4.7.1.
5 Organic solvent-based wood insect-resist agents
Organic solvent-based wood insect-resist agents shall contain at least one of the following
effective ingredients. deltamethrin, cypermethrin, permethrin, cyfluthrin, bifenthrin, chlorpyrifos,
imidacloprid, fipronil, chlorfenapyr.
6 Organic solvent-based wood preservatives
Organic solvent-based wood preservatives shall contain at least one of the following effective
ingredients. tebuconazole, propiconazole, cyproconazole, chlorothalonil, octohydroxylated
copper oxine, 3-iodo-2-propynyl butylcarbamate (IPBC), tributyltin oxide (TBTO), tributyltin
naphthenate (TBTN), Copper Naphthenate (CuN), Zinc Naphthenate (ZnN), 4,5-dichloro-2-hoctyl
-3(2H)- isothiazolone (DCOI).
7 Anti-mildew and anti-blushing agents
7.1 Anti-mildew and anti-blushing agents shall contain at least one of the following effective
ingredients. chlorothalonil, octohydroxylated copper oxine, methylene bis thiocyanate (MBT),
TCMTB, Carbendazim, triabendazole (TBZ), benomyl, 3-iodo-2-propynyl butylcarbamate (IPBC),
didecyl dimethyl ammonium chloride (DDAC), dodecyl benzyl dimethyl ammonium chloride (BAC),
coco trimethyl ammonium chloride, propiconazole, 5-chloro-2-methyl-3(2H)-isothiazolone
(isothiazolinone), fenpropimorph.
7.2 Anti-mildew and anti-blushing agents containing the effective ingredients listed in 7.1 shall be
solution, emulsion and suspension.
7.3 Anti-mildew and anti-blushing agents shall be marked with the content of each effective
ingredient.
8 Product mark, packaging, transportation and storage of
wood preservatives
8.1 Product mark of wood preservatives
8.1.1 The outer packaging of wood preservatives shall be marked with product logo (or
trademark), the content of all compositions, net weight, production date, manufacturer name,
address, telephone, fax, postal code.
8.1.2 The marks of the toxicity of wood preservatives shall comply with the provisions of GB 190.
8.1.3 Organic solvent-based wood insect-resist agents, organic solvent-based wood
preservatives, wood anti-mildew and anti-blushing agents shall have operating instructions, which
shall include the reasonable concentration and the amount of preservatives.
8.2 Packaging, transportation and storage of wood preservatives
8.2.1 The packaging of wood preservatives shall comply with the provisions of 4.1, 4.3.1 and
4.4.2 in the Chapter 4 of GB 3796-1999.
8.2.2 Transportation and storage of CCA-C, organic solvent-based wood insect-resist agents,
organic solvent-based wood preservatives, wood anti-mildew and anti-blushing agents shall
comply with the provisions of Chapter 4 and Chapter 5 of GB 12475-1990. In addition to CCA-C,
transportation and storage of other water-borne wood preservatives shall comply with the
provisions of transportation and storage of general chemical products.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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