Sap Green Hue

Pigment History: Sap Green was made of the small berries from any shrub in the Buckthorn family, of which there are a handful of varieties. The Buckthorn is native to the near east, but has been cultivated in Europe since Roman times. The ripe berries could be used to make a pink dye, while the unripe berries produce a yellow juice or sap used to dye cloth and to make a yellow pigment called Sap Green. When creating this hue, GOLDEN wanted to make sure that the color space was distinctly separate from another blend color, Jenkins Green. This was achieved by blending Transparent Red Iron Oxide, Nickel Azo Yellow, Phthalo Green Yellow Shade and adding a tiny amount of Carbon Black to get a deep yellow green. While the masstone is somewhat cool and dark, the undertone is warm and vibrant.
Pigment Classification: Mixture
Chemical Description: Brominated & Chlorinated Copper Phthalocyanine
Opacity/Transparency: N/A
Lightfastness Rating: N/A
Permanency: N/A
Colour Index Name: PG 36
Colour Index Number: 74265
Munsell Notation Listing:
Hue: 0.75 G
Value: 2.75
Chroma: 1.2
Pantone Matching System: PMS 5605
Spectrophotometer Readings: N/A
Viscosity Range: 16000-20000 CPS
PH Range: 8.7-9.0
Gloss Average: 96.24
CIE L*a*b* Values: L*28.27 a*-3.43 b*1.53
Tint Strength: 80.88

The Lightfastness Ratings included in this chart are provided by the American Society for Testing and Materials (ASTM) in the standard for “Artists’ Acrylic Emulsion Paints”. (ASTM D 5098, Annual Book of Standards, Volume 6.02). Colors with a Lightfastness Rating of I are considered Excellent (“Exc.”) and those with a Lightfastness Rating of II are Very Good (“V.G.”). Where Lightfastness Ratings have not been obtained according to ASTM test protocol, “NA” is indicated in the table. In these cases, data from pigment manufacturers and our own test facilities have been used and an appropriate description assigned under Permanency.

**The identified colors are sensitive to a combination of moisture and UV radiation and are not recommended for outdoor use.

For Opacity/Transparency, we have determined that an eight-point scale is most appropriate for describing the properties of our colors. We have assigned each color in the chart a number from 1 (most opaque) to 8 (most transparent) to indicate the relative opacity/transparency of that color.

The C.I. (Colour Index) Name is an internationally recognized code assigned to a particular “colorant.” The C.I. Name consists of the category (type of dye or pigment), general hue and serial number assigned, based on its chemical constitution. For example, PB 60, Anthraquinone Blue, indicates a specific Pigment Blue. The C.I. Number is a five-digit reference number assigned in the Colour Index based on the chemical structure of a colorant, regardless of usage class.

Notes:
1) The Golden C.P. designation indicates concentrated cadmium pigments (CC).

2) Information about Iridescent and Interference products apply for both Fine and Coarse grades.