1. Range

This criterion regulates the technical request, testing methods, supervising rules, packing sign and safe coating of limits of harmful substances in wall coatings.

This criterion is applied to the aqueous wall coatings for decoration.

This criterion cannot be applied to the internal wall coatings that use organic as solvent.

2. Citing relevant documents canonically

The items of following documents have been the items of this criterion after citing. As for the dated citing documents, all the following modification (not including corrigenda) or revision cannot apply to this criterion. However, we encourage those who have come to an agreement according to this criterion to study whether they could use the latest editions of these documents. All the latest editions of the non-dated citing documents can apply to this criterion.

GB/T 1250-1989 The denotation and determinant methods of limited number

GB 3186-1982 (1989) Sampling of coatings (neq ISO 1512: 1974)

GB/T 6682-1992 Analyzing the water standard and examining methods in laboratory (neq ISO 3696: 1987)

GB/T 6750-1986 Colored paint and clear lacquer, Mensuration of density (eqv ISO 2811: 1974)

GB/T 6751-1986 Colored paint and clear lacquer, Mensuration of volatiles and non-volatiles (eqv ISO 1515: 1973)

GB/T 9750-1998 Packing sign of coatings

GB/T 9758.1-1988 Colored paint and clear lacquer, Mensuration of soluble metal contents, The 1st part: mensuration of lead, The flame atom absorption spectroscopy and dithizone spectrophotometry (idt ISO 3856.1:1984)

GB/T 9758.4-1988 Colored paint and clear lacquer, Mensuration of soluble metal contents, The 4th part: mensuration of cadmium, The flame atom absorption spectroscopy and polarography (idt ISO 3856.4:1984)

GB/T 9758.6-1988 Colored paint and clear lacquer, Mensuration of soluble metal contents, The 6th part: mensuration of chrome in liquid of colored paint, The flame atom absorption spectroscopy (idt ISO 3856.6-1984)

GB/T 9758.7-1988 Colored paint and clear lacquer, Mensuration of soluble metal contents, The 7th part: mensuration of mercury in pigment of colored paint and liquid of water thinned paint, The flameless atom absorption spectroscopy (idt ISO 3856.7: 1984)

3. Requirements

The products should accord with the technical requirements in table 1.

Table 1: Technical Requirements

Item		Limitation
Volatile organic compound (VOC) g/L <=		200
Free formaldehyde g/kg <=		0.1
Heavy metal   (Color paint)   mg/kg <=	Soluble lead	90
	Soluble cadmium	75
	Soluble chrome	60
	Soluble mercury	60

4. Testing methods

4.1 Sampling

Sampling according to GB 3186-1982 (1989). The samples could be separated to two shares. One is conserved hermetically, and the other is for supervision as sample.

4.2 Mensuration of volatile organic compounds (VOC), according to appendix A.

4.3 Mensuration of free formaldehyde, according to appendix B.

4.4 Mensuration of heavy metals (soluble lead, soluble cadmium, soluble chrome, soluble mercury), according to appendix C.

5. Supervising Rules

5.1 All technical contents listed by this criterion are model-supervising items.

5.1.1 Under natural working condition, model-supervision should be held annually.

5.1.2 The model-supervision should be held if one of following instances happens:

——when the new products being typed originally;
——when the products being produced adventively;
——when the formula, process and raw material having large change;
——when resuming production after three-month stopping.

5.2 Judgment of testing result

5.2.1 Judgment of testing result is made according to the mending value comparative measurement in GB/T 1250-1989.

5.2.2 As long as testing results of all items reach this criterion, this product accords with this criterion. If one testing result cannot reach this criterion, it should retest the reserved sample. If the retesting result cannot reach this criterion, either, this product is ineligible.

6. Packing Sign

6.1 The packing sign should accord with the rules in GB/T 9750-1998, and the eligible products can sign clearly in the packages.

6.2 For those two-component or polycomponent coatings, their component ratio should be signed in packages. For those coatings that need dilute, the dilution ratio should be signed in packages.

7. Safe Coating

7.1 Keep good aeration and far away from fire when coating.

7.2 Adopt brush coating to your best.

7.3 The workers should wear necessary safety outfit.

7.4 Keep good aeration after coating.

7.5 The coated room should be placed for a period of time.