GB/T 8145-2021 Gum rosin
1 Scope
This document specifies the technical requirements, test methods, sampling, inspection rules, grading, as well as marking, packaging, transportation and storage of gum rosin.
This document is applicable to gum rosin products obtained by distilling pine oleoresin collected from living pine trees to separate turpentine.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 8146 Test methods for rosin
GB/T 31413 Binders for paints and varnishes - Identification of gum rosin - Gas-chromatographic analysis
3 Term and definition
For the purposes of this document, the following term and definition apply.
3.1
gum rosin
amorphous, transparent, glassy solid resin obtained by distilling pine oleoresin collected from living pine trees to separate turpentine
Note: When the source tree species is not specified, all gum rosins are collectively referred to as "gum rosin". Where the source tree species needs to be specified, the species name shall be added to the designation of gum rosin, for example, gum rosin from Pinus massoniana Lamb, gum rosin from Pinus elliottii Engelm, and gum rosin from Pinus latteri Mason.
4 Technical requirements
4.1 Gum rosin
The technical indicators for all grades of general gum rosins shall be as specified in Table 1. When source identification is not performed, all gum rosin products shall be graded according to the requirements of Table 1 and marked as "Grade X gum rosin".
Contents
Foreword I
1 Scope
2 Normative references
3 Term and definition
4 Technical requirements
5 Sampling
6 Test methods
7 Inspection rules
8 Grading
9 Marking, packaging, transportation and storage
Annex A (Normative) Grading of crystallized and sulfur-containing gum rosin
Bibliography
GB/T 8145-2021 Gum rosin
1 Scope
This document specifies the technical requirements, test methods, sampling, inspection rules, grading, as well as marking, packaging, transportation and storage of gum rosin.
This document is applicable to gum rosin products obtained by distilling pine oleoresin collected from living pine trees to separate turpentine.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 8146 Test methods for rosin
GB/T 31413 Binders for paints and varnishes - Identification of gum rosin - Gas-chromatographic analysis
3 Term and definition
For the purposes of this document, the following term and definition apply.
3.1
gum rosin
amorphous, transparent, glassy solid resin obtained by distilling pine oleoresin collected from living pine trees to separate turpentine
Note: When the source tree species is not specified, all gum rosins are collectively referred to as "gum rosin". Where the source tree species needs to be specified, the species name shall be added to the designation of gum rosin, for example, gum rosin from Pinus massoniana Lamb, gum rosin from Pinus elliottii Engelm, and gum rosin from Pinus latteri Mason.
4 Technical requirements
4.1 Gum rosin
The technical indicators for all grades of general gum rosins shall be as specified in Table 1. When source identification is not performed, all gum rosin products shall be graded according to the requirements of Table 1 and marked as "Grade X gum rosin".
Contents of GB/T 8145-2021
Contents
Foreword I
1 Scope
2 Normative references
3 Term and definition
4 Technical requirements
5 Sampling
6 Test methods
7 Inspection rules
8 Grading
9 Marking, packaging, transportation and storage
Annex A (Normative) Grading of crystallized and sulfur-containing gum rosin
Bibliography
