How to determine whether water-based adhesives comply with environmental regulations?

To determine whether water-based adhesives comply with environmental regulations, it is necessary to systematically verify them from four dimensions: standard basis, testing and verification, identification, and certification endorsement, to ensure that they meet national mandatory requirements and market compliance expectations.

1. Core standard basis: mandatory national standards that must be met

The environmental compliance of water-based adhesives is solely based on the following three mandatory national standards:

GB 33372-2020 "Limits for Volatile Organic Compounds in Adhesives": The VOC content of water-based adhesives shall not exceed 50 g/L, which is the core red line for judging environmental friendliness.

GB 4806.15-2024 "National Food Safety Standard - Adhesives for Food Contact Materials and Products": When used in scenarios such as food packaging and dairy bottle caps, the total migration must be ≤ 10 mg/dm ², aromatic primary amines must not be detected (detection limit 0.01 mg/kg), and lead must be ≤ 1 mg/kg.

GB 18583-2008 "Limits of Hazardous Substances in Adhesives for Interior Decoration Materials": Applicable to all indoor use scenarios, limit requirements:

Free formaldehyde ≤ 0.1%, benzene ≤ 0.1%

Toluene+xylene ≤ 20%

All product packaging must clearly indicate the implementation standard number (such as "GB 33372-2020"). Failure to label or labeling false standards can be directly judged as non-compliance.

2. Testing and Verification: Compliance Determination Process of Authoritative Laboratories

Compliance needs to be verified by a third-party testing agency using standard methods, and the process is as follows:

Sample preparation: Take ≥ 50g of homogenized sample, seal and store in the dark, and keep at a constant temperature of 25 ℃± 1 ℃.

VOC detection: Headspace gas chromatography-mass spectrometry (HS-GC/MS) was used according to GB/T 23986 or GB 33372.

Formaldehyde detection: using spectrophotometric method (acetylacetone method) according to GB 18583.

Heavy metal detection: Inductively coupled plasma mass spectrometry (ICP-MS) is used to detect lead, cadmium, mercury, and chromium.

Judgment principle: If any indicator exceeds the standard, it is judged as unqualified, with no buffer room.

Local market regulatory authorities (such as Linyi, Shandong) use GB 18583 or GB 33372 as the sole criteria for supervision and spot checks, and testing reports must be issued by CMA/CNAS certification agencies.

3. Identification and recognition: compliant "ID card" on the packaging

The packaging of legally compliant water-based adhesive products must clearly indicate:

Execution standard number (such as GB 33372-2020)

VOC content value (unit: g/L)

Production License Number (SC Number)

The "Ten Rings" Certification Mark (China Environmental Label) - Authoritative Environmental Endorsement

If the packaging only labels vague slogans such as "environmentally friendly" and "non-toxic" without specific standard numbers and testing data, it is considered false advertising and does not have legal effect.

4. Certification endorsement: The authority of China Environmental Labeling ("Ten Rings")

Passing the China Environmental Labeling Product Certification ("Ten Rings") is the highest market recognition of the company's environmental protection strength:

According to the standard: HJ 2541-2016 "Technical Requirements for Environmental Labeling Products - Adhesive"

Core requirements: no formaldehyde, no benzene derivatives, total SVOC ≤ 100 g/L, and must pass factory audit and type inspection.

The outer packaging of the certified product is printed with the "Ten Rings" graphic logo (Green Mountain, Green Water, Sun, Ten Rings), and consumers can scan the code to verify its authenticity.

5. International Compliance Reference (Export Scenarios)

If the product is intended for export, additional requirements must be met:

EU REACH regulation: Restrictions on SVHC (Substances of Very High Concern) content ≤ 0.1% (such as phthalates)

EU RoHS 3.0: Control of 10 hazardous substances including lead, cadmium, mercury, etc

The US EPA Method 24: VOC detection method is basically consistent with GB 33372, but complete MSDS and GHS classification need to be provided

The domestic standard (GB 33372) is stricter than most international standards, and meeting the national standard basically meets the basic export requirements.

6. Localization suggestions (Linyi, Shandong)

As a gathering place for the national water-based adhesive industry, Linyi's local market supervision department conducts high-frequency spot checks on water-based white latex, PVC composite adhesive and other products. It is recommended that:

Prioritize selecting products from local compliant enterprises such as Shandong Qichen and Yantai Yibin

Request suppliers to provide CMA testing reports within the past 12 months

Avoid purchasing "three no" products without brand, standard number, or "ten ring" logo

In the special inspection of environmental protection in Linyi City in 2025, 12% of unqualified products were removed from the market due to failure to label VOC content or exceeding VOC standards. Compliance labeling is a hard threshold for market access.