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Table 1 Raw materials and ratios used for the preparation of mock-ups

From: Evaluation of novel cleaning systems on mock-ups of unvarnished oil paint and chalk-glue ground within the Munch Aula Paintings Project

Manufacturer

No.

Material

Composition

Component

Kremer Pigmente

45,710

Cobalt blue medium (PB28)

CoAl2O4 (Blue Spinel)

Paint pigment

73,600

Poppyseed oil (refined)

Fatty acids

Paint binder

Amertek

n/a

Barium sulfate

BaSO4

Paint extender

Ottoson Färgmakeri

n/a

Balsam turpentine

Terpenes (Pine)

Paint thinner

Kremer Pigmente

58,000

Chalk from Champagne

CaCO3

Ground pigment

63,025

Rabbit skin glue

Collagen (hydrolysed)

Canvas sizing and binder for ground

Claessens

068

Linen canvas (395 g/m2)

Flax fibres

Canvas substrate

Ratios by mass (%) (wet film)

Glue size

Chalk-glue ground

Undiluted cobalt blue oil paint

Diluted cobalt blue oil paint

Water

93.5

41.6

Rabbit skin glue

6.5

2.9

Chalk

55.5

Pigment blue 28

44.0

26.4

Barium sulfate

22.0

13.2

Poppyseed oil

34.0

20.4

Balsam turpentine

40.0