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GB 30982-2014: Limit of hazardous substances in construction adhesive
GB 30982-2014
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 83.180
G 38
Limit of hazardous substances in construction
adhesive
ISSUED ON: JULY 24, 2014
IMPLEMENTED ON: MAY 01, 2015
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions ... 4 
4 Requirements ... 5 
5 Test methods ... 6 
6 Inspection rules ... 7 
7 Packaging marks ... 8 
Annex A (normative) Determination of free formaldehyde content in water-
based construction adhesive ... 9 
Annex B (normative) Determination of benzene, toluene and xylene content 17 
Annex C (normative) Determination of halogenated hydrocarbon content ... 21 
Annex D (normative) Determination of toluene diisocyanate content ... 25 
Annex E (normative) Determination of phthalate compound ... 28 
Limit of hazardous substances in construction
adhesive
1 Scope
This Standard specifies terms and definitions, requirements for the allowable
limits of hazardous substances to the human body and the environment, test
methods, inspection rules, packaging marks of construction adhesive.
This Standard is applicable to construction adhesive for bonding or sealing.
This Standard is applicable to solvent-based construction adhesive, water-
based construction adhesive and bulk construction adhesive.
2 Normative references
The following referenced documents are indispensable for the application 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 601-2002, Chemical Reagent - Preparations of Standard Volumetric
Solutions
GB/T 2943, Terms of adhesive
GB/T 6682-2008, Water for analytical laboratory use - Specification and test
methods
GB 18583-2008, Indoor decorating and refurbishing materials - Limit of
harmful substances of adhesives
3 Terms and definitions
For the purposes of this document, the terms and definitions defined in GB/T
2943 as well as the followings apply.
3.1 construction adhesive
adhesive that is used in the construction industry and related fields to bond
adherends together through adhesion
3.2 solvent-based construction adhesive
5.2 Benzene, toluene, xylene
The determination of benzene, toluene and xylene content shall be carried out
in accordance with the provisions of Annex B.
5.3 Halogenated hydrocarbon
The determination of halogenated hydrocarbon content is carried out in
accordance with the provisions of Annex C.
5.4 Toluene diisocyanate
The determination of toluene diisocyanate content is carried out in accordance
with the provisions of Annex D.
5.5 Phthalate compound
The determination of the content of phthalate compound shall be carried out in
accordance with the provisions of Annex E.
The type and content of phthalate compound can also be confirmed and
calculated according to the actual production formula.
5.6 Total volatile organic compound
The total volatile organic compound content is determined in accordance with
the provisions of Annex F of GB 18583-2008.
6 Inspection rules
6.1 Type inspection
All technical requirements listed in this standard are type inspection items.
Under normal production conditions, type inspection shall be carried out at least
once a year. Type inspection shall be carried out when the production formula,
process and raw materials have major changes or when production resumes
after 3 months of suspension.
6.2 Sampling method
Randomly take 3 samples from the same batch of products. Each sample is not
less than 0.5kg.
6.3 Determination of inspection result
Among the 3 samples taken, take 1 sample for determination according to the
provisions of this Standard. If the inspection results of all items meet the
Annex A
(normative)
Determination of free formaldehyde content in water-based construction
adhesive
A.1 Acetylacetone spectrophotometry
A.1.1 Overview
This method specifies the determination of free formaldehyde content in water-
based construction adhesive.
This method is suitable for water-based construction adhesive with free
formaldehyde content greater than 0.05g/kg.
A.1.2 Principle
Use water to dissolve the water-based construction adhesive. Distill free
formaldehyde dissolved in water with water. In acetic acid-ammonium acetate
buffer solution with pH=6, formaldehyde interacts with acetylacetone in distillate.
Quickly generate stable yellow compounds under boiling water bath conditions.
Measure the absorbance at 415nm after cooling. According to the standard
curve, calculate the free formaldehyde content in the sample.
A.1.3 Reagents
Unless otherwise specified, in the analysis, only the confirmed analytically-pure
reagents and distilled water or deionized water or equivalent purity water are
used.
A.1.3.1 Ammonium acetate.
A.1.3.2 Glacial acetic acid: ρ=1.055g/mL.
A.1.3.3 Acetylacetone: ρ=0.975g/mL. Acetylacetone solution: 0.25% (volume
fraction). Weigh 25g of ammonium acetate (A.1.3.1). Add a small amount of
water to dissolve. Add 3mL of glacial acetic acid (A.1.3.2) and 0.25mL of
acetylacetone (A.1.3.3). After mixing, add water to 100mL. Adjust pH=6.0. This
solution is stored at 2°C~5°C and can be stable for one month.
A.1.3.4 Hydrochloric acid solution: 1+5(V+V).
A.1.3.5 Sodium hydroxide solution: 30g/100mL.
based construction adhesive.
This method is suitable for water-based construction adhesive with free
formaldehyde content greater than 0.01g/kg.
A.2.2 Principle
Use water to dilute and extract free formaldehyde in the sample. After
derivatization with 2,4-dinitrophenylhydrazine to form formaldehyde hydrazine,
use high performance liquid chromatograph to determine. Use external
standard method to quantitatively determine.
A.2.3 Reagents and standard solutions
Except for special requirements, all reagents used are analytically-pure. The
water shall meet the requirements of grade one water in GB/T 6682-2008.
A.2.3.1 Reagents
A.2.3.1.1 Acetonitrile (chromatographically pure).
A.2.3.1.2 Phosphoric acid (chromatographically pure, mass fraction is 85%).
A.2.3.1.3 2,4-Dinitrophenylhydrazine (purity is greater than 97%).
A.2.3.1.4 Derivatization reagent: Weigh 0.1g of 2,4-dinitrophenylhydrazine
(A.2.3.1.3) into a 1000mL brown volumetric flask. Add 6mL of phosphoric acid
(A.2.3.1.2), acetonitrile (A.2.3.1.1) to set volume.
A.2.3.1.5 Formaldehyde-2,4-dinitrophenylhydrazone (standard product,
concentration is 1.0mg/mL, molecular formula: C7H6N4O4, relative molecular
weight: 210.15).
A.2.3.2 Standard solution
Use a pipette to accurately pipette 0.5mL of 1.0mg/mL formaldehyde-2,4-
dinitrophenylhydrazone (A.2.3.1.5) into a 50mL volumetric flask. Use
acetonitrile (A.2.3.1.1) to set volume. Set it as the first level standard solution.
Take 20.00mL of the first level standard solution and add it to a 50mL volumetric
flask. Use acetonitrile (A.2.3.1.1) to set volume. Set it as the second level
standard solution.
Take 20.00mL of the second level standard solution and add it to a 50mL
volumetric flask. Use acetonitrile (A.2.3.1.1) to set volume. Set it as the third
level standard solution.
Take 20.00mL of the third level stand...