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Winsor & Newton Cotman Watercolor - Sap Green, 21 ml tube
Cotman Watercolors
Recorded retailer price · not live
$8.02
Blick Art Materials · recorded 2026-10-21T11:26:27.993965000Z
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Product details
- Size
- 21 ml
- Blick SKU
- 00325-7092
About this product range
- Quality student-grade range
- 40+ colors, including modern and historic pigments
- Strong tint strength
- Reliable transparency and lightfastness
- Uniform consistency for beginners and students
Cotman Watercolors offer Winsor & Newton's renowned quality at an accessible price for students, beginners, and budget-conscious artists. Available in 8 ml and 21 ml tubes, the range features over 40 colors carefully selected for their tone, undertone, strength, and versatility in mixing.
Formulated with a blend of traditional and modern pigments—from natural earths to vibrant organic pigments—these colors allow for a variety of effects, from easy lifting to subtle washes to expressive, high-staining color. Most colors are transparent, with a smooth, consistent texture that makes them easy to work with, especially for those just starting out.
To keep the range affordable, a few of the more expensive pigments have been replaced with cost-effective alternatives—without sacrificing performance. With good to excellent permanence ratings, Cotman tubes are a reliable, affordable option for anyone looking to build a versatile palette without compromise.
Pigment information
General reference notes about pigments can describe other media (such as oil). They do not verify this product’s exact formulation or behavior.
Phthalo Green
- Pigment code
- PG36
- Type
- organic
- Chemical name
- polybromopolychlorinated copper(II) phthalocyanine
- Chemical formula
- C32H3Cl13CuN8 to C32HCl15CuN8 or C32H16CuN8Cl15 (PG7) or C32Br6Cl10CuN8 (PG36)
- Properties
- Phthalo Green is a transparent, cool, bright, high intensity color used in oil and acrylics. It comes from a Phthalocyanine Blue pigment where most of the hydrogen atoms have been replaced with chlorine, forming highly stable molecules. Pigment PG36 differs from PG7 in that a portion of the chlorine atoms are replaced with bromine atoms, which are reactively similar, but cause a yellow shift that is especially noticeable in mixtures. Phthalo Green has similar pigment properties and permanence to Phthalo Blue. It is slow drying and an excellent base color for mixing a range of bright greens. Phthalo Green is considered a very good alternative to Viridian because it is intense and mixes well and can be used to emphasize mineral colors in various tints. However, its tinting strength is very high, so it can overpower other colors. This pigment most closely resembles the discontinued and toxic Verdigris.
- Permanence
- Phthalo Greens are completely lightfast and resistant to alkali, acids, solvents, heat, and ultraviolet radiation. They are currently used in inks, coatings, and many plastics due to their stability and are considered a standard pigment in printing ink and the packaging industry.
- Toxicity
- Phthalo Green has no significant hazards, but it contained PCBs (polychlorinated biphenyls) until 1982.
- History
- This bright blue-green was developed in 1935 and has been in use since 1938.
- Description
- Bocour Green, Cyan Green, Intense Green, Monastral Green, Phthalocyanine Green, Rembrandt Green, Thalo Green, Winsor Green.
Quinacridone Gold
- Pigment code
- PO49
- Type
- organic, quinacridone
- Properties
- Quinacridone Gold is a transparent yellow-orange pigment. Quinacridone pigments have relatively low tinting strength in general. For this reason, quinacridone colors are often expensive, because more pigment is required in the formulation.
- Permanence
- Quinacridone Gold has very good lightfastness.
- History
- Quinacridone Gold, a color developed for the automotive industry, is no longer being manufactured. Some color producers still have stocks of the pigment.
- Description
- Quinacridone Sienna.
Related supplies
- Winsor & Newton Cotman Watercolor - Sap Green, 8 ml tube
- Winsor & Newton Cotman Watercolor - Intense Phthalo Green, 8 ml tube
- Winsor & Newton Cotman Watercolor - Intense Phthalo Green, 21 ml tube
- Winsor & Newton Cotman Watercolor - Hooker's Green Light, 8 ml, Tube
- Winsor & Newton Cotman Watercolor - Hooker's Green Light, 21 ml, Tube
- Winsor & Newton Cotman Watercolor - Hooker's Green Dark, 8 ml, Tube
- Winsor & Newton Cotman Watercolor - Hooker's Green Dark, 21 ml, Tube
- Winsor & Newton Cotman Watercolor - Cerulean Blue Hue, 8 ml tube
- Winsor & Newton Cotman Watercolor - Cerulean Blue Hue, 21 ml tube
- Winsor & Newton Cotman Watercolor - Cobalt Blue Hue, 8 ml tube
- Winsor & Newton Cotman Watercolor - Cobalt Blue Hue, 21 ml tube
- Winsor & Newton Cotman Watercolor - Indigo, 8 ml tube