A mixture of two Arylide Yellows and Titanium Dioxide, Primary Yellow can be a semi transparent, utility mixer. 

Pigment Classification: Organic

Color Index Name: PY 175 / PW 6 / PY 74

Color Index Number: 11710 / 11738 / 77891

Chemical Description: Arylide Yellow 10G Arylide Yellow Titanium Dioxide Rutile

Opacity/Transparency: Semi-Transparent

Lightfastness Rating: II

Permanency: Very Good

Munsell Notation Listing: Hue 4.6 Y Value 8.6 Chroma 13

Gloss Average: 44.27

Viscosity Range: 400-1000 CPS

CIE L*a*b* Values: L*84.6 a*7.27 b*90.03

Tint Strength: 95.17