ASTM D5200-03(R2021) pdf free download

ASTM D5200-03(R2021) pdf free download.Standard Test Method for Determination of Weight Percent Volatile Content of Solvent- Borne Paints in Aerosol Cans
1. Scope
1.1 This test method is for the determination of the weight percent volatile organic compounds of solvent-borne paints in aerosol cans. It offers a unique way to obtain paint specimens from aerosol cans. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety, health, and environmental practices and deter- mine the applicability ofregulatory limitations prior to use. A specific hazard statement is given in 6.7. 1.4 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Summary of Test Method
3.1 Adesignated quantity from an aerosol coating is sprayed into an adapter glass tube assembly and heated in an oven at 110 6 5°C for 60 min. The percent volatile is calculated from the loss in weight.
4. Significance and Use
4.1 This test method is the procedure of choice for deter- mining the volatile content in aerosol coatings under specified test conditions modeled after Method 35. 4 The inverse value, nonvolatile, is used to determine the weight percent solids content. This information is useful to the paint producer, user, and to environmental interests for determining the grams of volatile organic compounds per gram of solids emitted from aerosol cans.
5. Apparatus
5.1 Adapter Glass Tube Assembly, (Fig. 1). 5.1.1 Sample Adapter Tube, straight connecting with 35/25 spherical joints. Loosely fill with glass wool and precondition for 30 min in an oven at 110 6 5°C and store in a dessicator prior to use. 5,6 5.1.2 Charcoal Adapter Tube, straight connecting with 35/25 spherical joints. Fill with activated charcoal and plug both ends with glass wool. This tube is used to prevent the solvent vapors from contaminating the vacuum pump. 6,7 5.1.3 Adapters, connecting hose with 35/25 socket joints.
6. Procedure
6.1 Mix the aerosol can thoroughly using a shaker, similar to the Eberbach shaker in Fig. 2, for 15 min at the low-speed setting. It is essential that the samples be well mixed to obtain valid results. 6.2 Weigh accurately to 0.01 g, a preconditioned sample adapter tube. Use a pair of gloves at all times when handling the adapter glass tube. 6.3 Remove the cap and actuator from the mixed can. Replace the actuator with one having an extension tube. 6.4 Test actuator and extension tube fit by spraying some contents out for about 5 s. This step also clears the dip tube in case a separation has occurred. If a leak is observed, replace with a better fitting actuator or extension tube. 6.5 Weigh the aerosol can with the actuator to the nearest 0.01 g. Spray 3 to 5 g ofaerosol into the adapter tube assembly, spreading out the coating by moving the extension tube around the wall of the adapter tube. The spraying is done with the vacuum on. 6.6 Obtain the specimen weight by difference by weighing the aerosol can again to 0.01 g after spraying out the specimen. 6.7 Place the sample adapter tube in the drying oven for 60 min at 110 6 5°C. (Warning—Provide adequate ventilation, consistent with accepted laboratory practice, to prevent solvent vapors from accumulating to a dangerous level.) 6.8 Remove the adapter tubes from the oven, place imme- diately in a dessicator, cool to ambient temperature, and weigh to 0.01 g.