ASTM D1475 Density of Liquid Coatings, Inks

Scope:

ASTM D1475 test is used for measuring the density of paints, varnishes, inks, lacquers, and constituents other than pigments in fluid form. It is especially useful when the fluid is too volatile or has high viscosity for a density balance determination. ASTM D1475 is applicable for testing products that require maximum accuracy. It can also be used to test products that do not require high accuracy.

Test Procedure:

For ASTM D1475, distilled water in an accurate quantity having an absolute density at different temperatures is used to calibrate the volume of a vessel or container. Then, the weight of the liquid paint or other pigment contents of the container at a fixed temperature or at the agreed temperature is determined. Finally, the density of the contents is calculated as grams per liter or pounds per gallon at the specified temperature. 

Sample size:

The sample size is used as specified by ASTM D1475. 

Data:

For ASTM D1475, the container volume is calculated as follows:

V=(N−M)/ρ‌

where: 

V = volume of the container, mL,

M = weight of the dry container, g,

N = weight of container and water, g and 

ρ‌ = absolute density of water at the specified temperature, g/mL 

Density in grams per milliliter is calculated as follows:

D_m=(W-w)/V

where:

D_m= density, g/mL,

Density in pounds per gallon is calculated as follows:

D=(W-w)K/V

where:

D = density, lb/gal,

K = 8.3454, and 

V = volume of container, mL

Conclusion:

ASTM D1475 test is used for measuring the Density of Liquid Coatings, Inks, and Related Products.