Product Specifications

Viscosity:	Flash Point:	Density (lb/gal):	Solid (% by weight):	Solid (% by volume):	Shelf Life (months):
95 KU at 77°F	-0.4° F (-20°C)	9.2	40%	21%	12

Product Description

Chembase White is a ready to use, white nitrocellulose primer. It is a single pack, conventional lacquer basecoat recommended as the primer for Chemlack White 230-65XX. Chembase White dries to sand quickly and powders well during sanding.

Uses

N/A

Environmental Data (as supplied)

VOC less exempt lb/gal:	VOC lb/gal:	VOC less exempt g/l:	VOC g/l:	VOC lb/lb Solid:	VHAPs lb/lb Solid:
<5.00	<3.30	<600	<400	<0.90	<0.25

Note:

See individual compliance sheets for specific data

Application Data

Suggested Uses:	Mixing Ratio:	Pot Life:	Application Viscosity:	Reducer:	Retarder:	Clean-up Solvent:	Recommended Wet Film:	Coverage:
Wood Primer	Reduce as required	N/A	Zahn #2 signature cup 25 – 30 seconds	803-1298	800-5328	N/A	3 – 5 mils	341 sq. ft/gal at 1 mil dry and at 100% transfer efficiency. Coverage will vary depending on method of application or coating thickness.

Note:

N/A

Surface Preparation

Substrate should be sanded using 120, 150 or 180 grit stearated paper prior to coating. Primers should be sanded with 280/320 grit stearated paper prior to being coated.

General Information

Chembase White may be applied in two or more coats, depending on the desired finish. The dry film build should not exceed 2 – 3 mils. The total dry film build of the system should not exceed 4 mils. 

Chembase White should be thoroughly stirred, and mixed with an appropriate amount of reducer. 

Chembase White must not be polluted with oil, varnish or the like and must not be sanded with steel wool between coats.

Chembase White must not be used and dried at temperatures below 64°F or relative humidity above 65%.  During the curing process, the coating must not be exposed to ammonia vapors.  Ammonia cleaners should not be used for cleaning the finish surfaces.  This may accelerate discoloration.

THE CUSTOMER IS RESPONSIBLE FOR FOLLOWING THE RECOMMENDED APPLICATION PROCEDURES. FAILURE TO ADHERE TO THE RECOMMENDATIONS GIVEN IN THIS DATA SHEET WILL LIKELY RESULT IN UNSATISFACTORY FILM APPEARANCE OR FILM FAILURE. THE COMPLETE COATING SYSTEM SHOULD BE CHECKED FOR REQUIRED PROPERTIES PRIOR TO THE START-UP OF PRODUCTION.

Drying Times

Room Temperature (68°F)

Tack Free Time:	Dry to Sand:	Dry to Stack:
10 – 15 minutes	45 minutes	2 hours

Forced Drying Schedule (122°F)

Tack Free Time:	Dry to Sand:	Dry to Stack:
Flash off before entering oven	20 – 30 minutes	45 minutes

Note:

N/A

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Dry times are greatly affected by film build, porosity of substrate, air movement as well as heat and humidity. Temperatures are based on actual board temperature. This may vary depending on length of time for boards to reach these temperatures. Minimum curing temperatures of 64°F/18°C must be maintained throughout the curing cycle to achieve the film integrity as stated in product features.