LY/T 1357: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| LY/T 1357-2008 | English | 199 |
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Disproportionated rosion
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LY/T 1357-2008
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| LY/T 1357-1999 | English | RFQ |
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Disproportionated rosin
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LY/T 1357-1999
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PDF similar to LY/T 1357-2008
Basic data | Standard ID | LY/T 1357-2008 (LY/T1357-2008) | | Description (Translated English) | Disproportionated rosion | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B72 | | Classification of International Standard | 71.100.99 | | Word Count Estimation | 5,530 | | Date of Issue | 2008-03-31 | | Date of Implementation | 2008-05-01 | | Older Standard (superseded by this standard) | LY/T 1357-1999 | | Quoted Standard | GB/T 8145-2003; GB/T 8146-2003; GB/T 14020-2006; LY/T 1145-1993 | | Regulation (derived from) | State Forestry Administration Announcement (Website) | | Issuing agency(ies) | State Forestry Administration | | Summary | This standard specifies the technical requirements of rosin, test methods, inspection rules, marking, packaging, transport and storage. This standard applies to gum rosin by palladium/carbon catalyst obtained rosin. | LY/T 1357-2008: Disproportionated rosion---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Disproportionated rosion
ICS 71.100.99
B72
People's Republic of China Forestry Industry Standard
Replacing LY/T 1357-1999
Disproportionated rosin
Released on.2008-03-31
2008-05-01 implementation
State Forestry Administration released
Foreword
This standard replaces LY/T 1357-1999 "Disproportionated Rosin".
This standard has the following changes compared to LY/T 1357-1999 (formerly ZBB72002-1984).
--- Increased the appearance of the measurement, increased the appearance of the measurement items, and specified a more intuitive method of transparency observation;
--- Increased the color of the glass block;
--- Change the measurement method of each item directly to GB/T 8146-2003 and GB/T 14020-2006;
--- In the logo to specify the identification method of the batch number, making the product traceable;
--- Disproportionated rosin packaging barrel requirements to refer to LY/T 1145-1993;
--- Increased transportation regulations.
This standard is proposed and managed by the Institute of Chemical Industry of Forest Products of the Chinese Academy of Forestry.
This standard was drafted by the Institute of Chemical Industry of Forest Products of the Chinese Academy of Forestry.
The main drafters of this standard. Gao Hong, Song Zhanqian, Ye Bojun.
The previous versions of the standards replaced by this standard are.
---ZBB72002-1984;
---LY/T 1357-1999.
Disproportionated rosin
1 Scope
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of disproportionated rosin.
This standard applies to disproportionated rosin obtained by the rosin rosin by palladium on carbon catalyst.
2 Normative references
The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all
Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study
Is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard.
GB/T 8145-2003 Grease rosin
GB/T 8146-2003 Rosin test method
GB/T 14020-2006 hydrogenated rosin
LY/T 1145-1993 rosin drum
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
An amorphous transparent solid obtained by the gum rosin catalyzed by a palladium/carbon catalyst is a mixture of various resin acids. Main chemistry
The component is dehydroabietic acid, and its molecular formula is C19H27COOH.
4 Technical requirements
Disproportionated rosin is divided into special grade and first grade.
The indicators should meet the requirements of Table 1.
Table 1 Technical requirements for disproportionated rosin
Project premium product
colour
Luo Weibang color number ≤
Yellow 20 40
Red 2.1 3.4
The color ratio of the glass color block meets the requirements of the rosin grade and meets the requirements of the rosin level III.
Transparent appearance
Tannic acid /% ≤ 0.10 0.50
Dehydroabietic acid /% ≥ 52.0 45.0
Softening point (ring and ball method)/°C ≥ 75.0 75.0
Acid value/(mg/g) ≥ 155.0 150.0
Unsaponifiable /% ≤ 10.0 12.0
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