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Other Properties of Adi-pure® |
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| Physical and Chemical Properties |
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The Tables show the typical physical and chemical
properties of INVISTA Adi-pure®
Typical Physical Properties of Adi-pure®
| Property |
Typical Value |
| Molecular Weight |
146.14 |
| Boiling Point (760 mm) |
337.5°C (639.5°F) with
decomposition |
| Melting Point |
151.5–153.0°C
(304.7–307.4°F) |
Density
Solid
Liquid at 163°C (325.4°F) |
1.360 g/cc
1.093 g/cc |
Bulk Density
Loose
Packed |
640–720 kg/m3 (40–45 lb/ft3)
Packed 800–930 kg/m3 (50–58 lb/ft3) |
| Hygroscopicity |
Nonhygroscopic at 27°C
(80.6°F) and 85% RH |
| Crystal Form |
Monoclinic needles |
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| Solution Properties |
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| Property |
Typical Value |
| Solubility |
see Figure below the Table |
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pH of Aqueous
Solutions at
25°C (77°F) |
| Concentration | |
pH |
| 0.1% | 3.2 |
| 0.2% | 3.1 |
| 0.4% | 3.0 |
| 0.6% | 2.9 |
| 1.2% | 2.8 |
| 2.5% | 2.7 | |
Density of Saturated
Aqueous Solutions |
| Temperature | |
Density |
| 20°C (68°F) | 1.0045 g/cc |
| 40°C (104°F) | 1.0050 g/cc |
| 60°C (140°F) | 1.0125 g/cc | |
Ionization Constant
( K) in Water at 25°C
(77°F) |
| Step 1 | |
3.71 x 10–5 (p K1 = 4.43) |
| Step 2 | 3.87 x 10–6 (p K2 = 5.41) |
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| Thermal Properties |
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| Property |
Typical Value |
Specific Heat
Solid
Liquid |
1.59 kJ/kg·°K (0.38 cal/g·°C)
2.26 kJ/kg·°K (0.54 cal/g·°C) |
| Heat of Formation |
–6503 kJ/kg (–1625.8 cal/g) |
| Heat of Fusion |
238.5 kJ/kg (57.0 cal/g) |
| Heat of Vaporization |
560.3 kJ/kg (133.9 cal/g) |
Heat of Sublimation at
25°C (77°F) |
881.8 kJ/kg (210.8 cal/g) |
| Heat of Combustion |
19,149 kJ/kg (4576.8 cal/g) |
Heat of Solution, Water
10–20°C (50–68°F)
90–100°C (194–212°F) |
–213.6 kJ/kg (–51.1 cal/g)
–240.5 kJ/kg (–57.5 cal/g) |
Heat of Crystallization
from Water |
265.3 kJ/kg (63.4 cal/g) |
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| Other Typical Physical Properties |
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| Property |
Typical Value |
Flash Point, Cleveland
Open Cup |
210°C (410°F) |
Flash Point, Tag
Closed Cup |
196°C (385°F) |
Vapor Pressure, Molten
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Temperature |
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Vapor Pressure |
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159.5°C (319.1°F) |
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0.13 kPa (1 mmHg) |
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205.5°C (401.9°F) |
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1.33 kPa (10 mmHg) |
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240.5°C (464.9°F) |
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5.33 kPa (40 mmHg) |
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265.0°C (509.0°F) |
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13.33 kPa (100 mmHg) |
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312.5°C (594.5°F) |
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53.32 kPa (400 mmHg) |
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337.5°C (639.5°F) |
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101.31 kPa (760 mmHg) |
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(with decomposition) |
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Viscosity, Molten
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Temperature |
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Viscosity |
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160°C (320°F) |
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4.54 cP |
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193°C (379.4°F) |
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2.64 cP |
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