Composition & Permanence

The table below provides technical information on the composition, permanence and characteristics of Cotman Water Colour. For further information on what each heading means and how it can improve your painting, click on it.

Code 

Colour Name

Series 

Permanence 

ASTM 

T/O 

G/St 

Chemical Description

CI Name 

CI Number

003

Alizarin Crimson Hue

1

A

-

T

-

Quinacridone pyrrolidine, Quinacridone

- , PR206

- , 73900/73920

074

Burnt Sienna

1

AA

I

T

-

Synthetic iron oxide

PR101

77491

076

Burnt Umber

1

AA

I

O

-

Synthetic iron oxide, Calcined natural iron oxide

PY42, PBr7

77492, 77491

089

Cadmium Orange (USA/Canada only)

2

A(ii)

I

O

-

Cadmium sulphoselenide, Cadmium zinc sulphide

PR108, PY35

77202, 77205

090

Cadmium Orange Hue

1

A

-

T

-

Diarylide yellow, Perinone orange

PY83, PO43

21108, 71105

094

Cadmium Red (USA/Canada only)

2

A

I

O

-

Cadmium sulphoselenide

PR108

77202

095

Cadmium Red Hue

1

A

-

T

St

Perylene, Pyrrole

PR149, PR255

71137, 561050

098

Cadmium Red Deep Hue

1

A

-

T

St

Naphthol AS, Pyrrole

PR188, PR254

12467, -

100

Cadmium Red Light (USA/Canada only)

2

A

I

O

-

Cadmium sulphoselenide

PR108

77202

103

Cadmium Red Pale Hue

1

A

II

T

St

Arylide yellow RN, Pyrrole

PY65, PY255

11740, 561050

108

Cadmium Yellow (USA/Canada only

2

A (ii)

I

O

-

Cadmium zinc sulphide, Cadmium sulphoselenide

PY35, PO20

77205, 77199

109

Cadmium Yellow Hue

1

A

II

T

St

Arylide yellow FGL, Arylide yellow RN

PY97, PY65

11767, 11740

113

Cadmium Yellow Light (USA/Canada only)

2

A (ii)

I

O

-

Cadmium zinc sulphide

PY35

77205

119

Cadmium Yellow Pale Hue

1

A

-

T

St

Arylide yellow RN, Benzimidazolone yellow H6G

PY65, PY175

11740, 11784

137

Cerulean Blue (USA/Canada only)

2

AA

I

O

-

Cobalt stannate

PB35

77368

139

Cerulean Blue Hue

1

A

II

O

-

Copper phthalocyanine

PB15

74160

150

Chinese White

1

AA

I

O

-

Zinc oxide

PW4

77947

178

Cobalt Blue (USA/Canada only)

2

AA

I

O

-

Cobalt aluminate

PB28

77346

179

Cobalt Blue Hue

1

A(iii)

I

T

-

Complex sodium alumino-silicate containing sulphur, Coprecipitated zinc sulphide/ barium sulphate

PB29, PW5

77007, 77115

192

Cobalt Violet USA/Canada only)

2

AA

I

T

-

Cobalt phosphate

PV14

77360

231

Dioxazine Violet

1

A

-

T

St

Dioxazine violet

PV23

51319

235

Emerald

1

A

-

O

-

Chlorinated copper phthalocyanine, Benzimidazolone yellow H6G

PG7, PY175

74260, 11784

266

Gamboge Hue

1

A

II

T

-

Nickel dioxine

PY153

48545

312

Hooker’s Green Dark

1

A

-

T

St

Copper phthalocyanine, Chlorinated copper phthalocyanine, Quinacridone

PB15, PG7, PO49

74160, 74250, 73900

314

Hooker’s Green Light

1

A

-

T

St

Copper phthalocyanine, Quinacridone, Chlorinated copper phthalocyanine

PB15, PO49, PG7

74160, 73900, 74260

317

Indian Red

1

AA

I

O

-

Synthetic iron oxide

PR101

77491

322

Indigo

1

A

II

O

-

Copper phthalocyanine, Carbon black, Complex sodium alumino-silicate containing sulphur

PB15, PBk7, PB29

74160, 77266, 77007

327

Intense Blue

1

A

II

T

St

Copper phthalocyanine

PB15

74160

329

Intense Green

1

A

I

T

St

Brominated copper phthalocyanine

PG36

74265

331

Ivory Black

1

AA

I

O

-

Bone black

PBk9

77267

337

Lamp Black

1

AA

I

O

-

Carbon black, Carbon black

PBk7, PBk6

77266, 77266

346

Lemon Yellow Hue

1

A

-

T

-

Benzimidazolone yellow H6G

PY175

11784

347

Lemon Yellow Nickel Titanate (USA/Canada only)

2

AA

I

O

-

Nickel titanate

PY53

77788

362

Light Red

1

AA

I

O

-

Synthetic iron oxide

PR101

77491

398

Mauve

1

A

-

T

-

Quinacridone, Carbazole dioxazine

PR122, PV23

73915, 5319

465

Payne’s Gray

1

A

-

T

-

Complex sodium alumino-silicate containing sulphur, Carbon black, Copper phthalocyanine

PB29, PBk7, PB15

77007, 77266, 74160

502

Permanent Rose

1

A

I

T

St

Quinacridone violet

PV19

46500

538

Prussian Blue

1

A(iv)

I

T

-

Alkali ferriferrocyanide

PB27

77510

544

Purple Lake

1

A

I

T

St

Quinacridone

PV19

46500

552

Raw Sienna

1

AA

I

T

-

Synthetic iron oxide, Synthetic iron oxide

PY42, PR101

77492, 77491

554

Raw Umber

1

AA

I

T

-

Natural iron oxide, Synthetic iron oxide

PBr7, PY42

77492, 77492

580

Rose Madder Hue

1

A

-

T

-

Quinacridone pyrrolidone, Quinacridone

- , PR206

- , -

599

Sap Green

1

A

-

T

St

Brominated copper phthalocyanine, Quinacridone

PG36, PO49

74265, 73900

609

Sepia

1

AA

I

T

-

Calcined natural iron oxide

PBr7, PBk7

77491, 77266

654

Turquoise

1

A

II

O

-

Copper phthalocyanine, Chlorinated copper phthalocyanine

PB15, PG7

74160, 74260

660

Ultramarine

1

A(iii)

I

T

G

Complex sodium alumino-silicate containing sulphur

PB29

77007

676

Vandyke Brown

1

AA

I

O

-

Synthetic iron oxide, Calcined natural iron oxide

PR101, PBr7

77491, 77491

692

Viridian (USA/Canada only)

2

AA

I

T

-

Hydrated chromium oxide

PG18

77289

696

Viridian Hue

1

A

I

T

St

Chlorinated copper phthalocyanine

PG7

74260

744

Yellow Ochre

1

AA

I

O

-

Synthetic iron oxide

PY42

77492