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Casein: hot needle test
- Comments Off on Casein: hot needle test
Casein identification guide: casein is a thermoset semi-synthetic polymer made from milk, hardened in formaldehyde
13. Hot needle test: slow to burn, heat aura appears around point, sizzles, smokes, smells like burned milk, usually leaves a hard ridge around test point.
source: Button Materials A-Z: Identification Guide
by Jocelyn HowellsButton Specs
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Material
- 1-0 CELLULOID ASSORTED (45)
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- 1-2 Other material embellishment (8)
- 1-3 Designs (1)
- 1-3.1 Ivoroid (1)
- 1-4 Sheet (34)
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- 1-4.4 Perforate (8)
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- 1-4.5 Shield (3)
- 1-5 Specific forms (1)
- 1-1.3.1 Wafers (1)
- 1-7 Unlisted (1)
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- 2-2 Porcelain (12)
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- 2-3 Satsuma (8)
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- 2-8 Other material embellishment (3)
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- 3-1.3.1 Four-hole (5)
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- Body/base color (1)
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- 4-0 ENAMELS (33)
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- Metal (3)
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- 7-2 Clear colorless (22)
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- 7-3.1 Opaque translucent (31)
- 7-3.3 White (32)
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- 7-5.4 Paint enamel (32)
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- 7-5.3 Metallic back (2)
- 7-5.2 Lusters (44)
- 7-5.2.3 Silver (11)
- 7-5.2.1 Gold (20)
- 7-5.2.2 iridescent/aurora (11)
- 7-5.1 Acid etched/frosted (3)
- 7-6 Mechanical make-up (4)
- 7-7 Molded/cut surface designs (92)
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- 8-0 GLASS in/on METAL (81)
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- 10-14 Other material embellishment (27)
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- 10-15 Specific types (2)
- 11-0 SHELL (93)
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- 11-8.01 Carved (46)
- 12-0 Synthetic Polymer (75)
- 12-1 Thermoset types (42)
- 12-1.2 Casein (24)
- 12-1.4 Polyester (8)
- 12-1.3 Phenolic resin (8)
- 12-1.1 Amino resin (2)
- 12-2 Thermoplastic types (29)
- 12-2.4 Nylon (11)
- 12-2.2 Acrylic resin (3)
- 12-2.3 Cellulose acetate (8)
- 12-2.5 Polymer clay (1)
- 12-2.6 Polystyrene (2)
- 12-2.1 ABS (3)
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- 12-6 Colors (2)
- 12-7 Decorative finishes (7)
- 12-7.4 Paint (3)
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- 12-7.2 Metalized (3)
- 12-7.1 Cold plastic enamel (1)
- 12-8 Imitation of other materials (19)
- 12-9 Other material embellishment (11)
- 12-9.3 Metal (4)
- Glitter (1)
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- 12-10 Techniques assorted (11)
- 12-1 Thermoset types (42)
- 13-0 VEGE IVORY (13)
- 14-0 WOOD (22)
- 14-1 Processed wood (2)
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- 14-4 Decorative finishes (5)
- Paint/lacquer (4)
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- 14-6 Mounted in/on metal (6)
- Background (2)
- 14-7 Other material embellishment (6)
- 14-7.2 Metal (1)
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- 14-7.1 Glass rhinestones/pastes (1)
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- Carved turned/lathed laser cut (3)
- Pierced (1)
- 14-9.4 Pressed (2)
- 15- Other Materials (64)
- 15-1 BONE (4)
- 15-2 COMPOSITION (8)
- 15-3 IVORY (8)
- 15-4 RUBBER (8)
- Back marks (5)
- 15-5 Unlisted (35)
- 1-0 CELLULOID ASSORTED (45)
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Designs
- PICTORIALS (475)
- 17-0 ANIMALS (135)
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- 20-16 Mythological (107)
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- 20-22.1 Human (21)
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- 17-0 ANIMALS (135)
- 22-1 PATTERNS (73)
- 22-1-1 All-over designs (3)
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- 4-sided (2)
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- PICTORIALS (475)
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Characteristics
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- 24-0 "EIGHTEENTH CENTURY" or earlier (29)
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- Enamel (2)
- in/on metal (3)
- Gemstone (2)
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- Copper colored (2)
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Types
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- Whistle (1)
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Usages
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Specialties
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Sizes
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