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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)
- 1-1 Decorative finishes (4)
- 1-2 Other material embellishment (8)
- 1-3 Designs (1)
- 1-3.1 Ivoroid (1)
- 1-4 Sheet (34)
- 1-4.1 Background (11)
- 1-4.3 Face center (2)
- 1-4.4 Perforate (8)
- 1-4.6 Tight top (1)
- 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)
- 2-2.1 Arita (4)
- 2-3 Satsuma (8)
- 2-4 Stoneware (10)
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- 2-6 Decorative finishes (8)
- 2-7 Mounted in/on metal (6)
- 2-8 Other material embellishment (3)
- 3-0 CHINA (16)
- 3-1 Back types (14)
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- 3-1.2 *Metal shank (1)
- 3-1.3.1 Four-hole (5)
- 3-1.3.3 *Whistle (1)
- 3-2 Body styles (9)
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- Body/base color (1)
- 3-4 Decorative designs finishes (10)
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- 4-0 ENAMELS (33)
- 4-1 Construction (25)
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- Metal (3)
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- 6-0 GLASS, BLACK (154)
- 6-1 All black (29)
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- 6-2.1 Four-way metal shank (13)
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- 7-0 GLASS, clear and colored (138)
- 7-1 Back types (27)
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- 7-1.2 Rosette shank (1)
- 7-1.3 Sew-through (2)
- 7-1.4 Swirlback (10)
- 7-2 Clear colorless (22)
- 7-3 Colors (77)
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- 7-3.1 Opaque translucent (31)
- 7-3.3 White (32)
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- 7-4.6 Foil embedded (3)
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- 7-5 Decorative finishes (71)
- 7-5.4 Paint enamel (32)
- 7-5.6 Transfer/decal (1)
- 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)
- 7-7.2 Faceted (4)
- 7-7.1 Embossed/cameo (9)
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- 7-7.3 Imitation fabric (65)
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- 7-8.2 Rhinestones/pastes (1)
- 7-8.1 Metal (2)
- 7-1 Back types (27)
- 8-0 GLASS in/on METAL (81)
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- One-piece mounting (30)
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- 9-0 HORN (11)
- 10-0 METALS (197)
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- 10-13.1 One-piece (9)
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- 10-13.4 Openwork design (22)
- 10-14 Other material embellishment (27)
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- 10-15 Specific types (3)
- 11-0 SHELL (93)
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- 11-7 Other material embellishment (51)
- 11-7.1 Glass rhinestones/pastes (9)
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- 11-7.2.3 “Watch wheel" (1)
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- 11-7.2.2 Escutcheon (7)
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- 11-8.2 Engraved (11)
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- 11-8.01 Carved (46)
- 12-0 Synthetic Polymer (76)
- 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)
- 12-3 Back marks (2)
- 12-6 Colors (2)
- 12-7 Decorative finishes (7)
- 12-7.4 Paint (3)
- 12-7.3 Metallic luster (1)
- 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)
- 12-9.1 Glass (3)
- 12-10 Techniques assorted (11)
- 12-1 Thermoset types (42)
- 13-0 VEGE IVORY (13)
- 14-0 WOOD (22)
- 14-1 Processed wood (2)
- 14-2 Unprocessed wood (7)
- 14-4 Decorative finishes (5)
- Paint/lacquer (4)
- 14-4.2 Stain/dye (1)
- 14-6 Mounted in/on metal (6)
- Background (2)
- 14-7 Other material embellishment (6)
- 14-7.2 Metal (1)
- 14-7.4 Shell (1)
- 14-7.1 Glass rhinestones/pastes (1)
- 14-9 Working methods (6)
- 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 (482)
- 17-0 ANIMALS (136)
- 17-2 Birds (49)
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- 19-0 PLANTS (99)
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- 19-2 Flowers (47)
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- 19-5 Grains grasses (10)
- 19-5.1 Corn (1)
- 19-6 Leaves (21)
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- 19-7.1 Acorns (5)
- 19-8 Trees (2)
- 19-9 Vegetables (1)
- 19-10 Unlisted (cones cactus etc.) (2)
- 20-0 OTHER PICTORIALS (232)
- 20-1 Architectural structures and/or scenes (11)
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- 20-14 Men (40)
- 20-15 Musicians (1)
- 20-16 Mythological (109)
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- 20-19 Religious (19)
- 20-20 Stories (8)
- 20-20.1 Fables (3)
- 20-21 Theater opera circus (2)
- 20-22 Transportation (30)
- 20-22.1 Human (21)
- 20-22.1.1 Ships/boats (1)
- 20-22.2 Non-human (5)
- 20-23 Women (34)
- 20-24 Unlisted (1)
- 17-0 ANIMALS (136)
- 22-1 PATTERNS (73)
- 22-1-1 All-over designs (3)
- 22-1.1.1 Plaid (1)
- 22-1-2 Curvilinear designs (28)
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- 4-sided (2)
- 22-1.3.1 Circle (20)
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- 22-1-6 Radial designs (27)
- 22-1.6.2 Multi-lobed (4)
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- 22-2 SYMBOLS (11)
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- 22-2-3 Pictorial (1)
- PICTORIALS (482)
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Characteristics
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- 23-6-3 GAY NINTIES (14)
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- 23-7 INLAY (2)
- Insertion inlay (1)
- 24-0 "EIGHTEENTH CENTURY" or earlier (29)
- Ceramics (2)
- Enamel (2)
- in/on metal (3)
- Gemstone (2)
- Pearl/shell (1)
- Metals (11)
- Copper colored (2)
- Silver (2)
- Steel/iron (2)
- White metals (4)
- Yellow metals (1)
- Other materials (1)
- Bone (1)
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- 24-9 Under glass (5)
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Types
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- 23-1-1 Celluloid (4)
- 23-1-2 Fabric (1)
- 23-1-3 Glass (1)
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- Whistle (1)
- 23-3-1 Cone shank (2)
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Usages
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Specialties
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Sizes
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