C.I.NO.: Solvent Red 49
Solvent Red BN, Solvent Red BR, Oil Red BN, Baso Red 546, Neptun Red Base 543, Oil Pink 312, Oil Pink FB, Rhodamine B Base; Neptun Red Base 543 (BASF); Orient oil Pink 312 (KKK)
Molecular Formula: C28H30N2O3
Molecular Weight: 442.55
CAS Registry Number: 509-34-2
1. Manufacturing Methods: (a)3-(Diethylamino) phenol and Phthalic anhydride ondensation, alkali fusion, with sulfuric acid acid solution, and using hydrochloric acid crystallization, (b) 2-(3,6-Dichloro-9H-xanthen-9-yl) benzoic acid and Diethylamine in pressure reaction (BP 960088), then made C.I. Basic Violet 10 free base.
2. Properties and Applications: Soluble in water and ethanol for blue light red, with a strong fluorescence, slightly soluble in Acetone, soluble in Cellosole. In concentrated sulfuric acid for yellow brown, and have a strong green fluorescent, dilution after big red, then to blue light red and orange. Dye aqueous sodium hydroxide to join after heating is rose red flocks. Mainly used in oil, candles, rubber, plastic and transparent paint color.
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Standard |
Light Fastness |
Heat-resistant (℃) |
water |
Sodium Carbonate (5%) |
Hydrochloric acid (5%) |
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|
Melting point |
Stable |
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|
ISO |
Poor |
160 |
110 |
Good |
Indissolable |
Indissolable |
3. Physical and Chemical Properties:
|
Test Items |
Specification |
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Appearance |
Brilliant blue light pink. |
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|
Shade |
BLUISH |
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/ |
Standard |
Test Conclusion |
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Tinting Strength |
100-105 % |
102% |
|
Shade |
Similar or Minimal Level |
Similar |
|
Water |
≦1.0 |
0.4 |
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Insolubles |
≦1.0 |
0.25 |
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Heat Resistance |
180 °C min |
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Light Fastness |
4-5 |
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Acid Resistance |
4 |
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Alkali Resistance |
5 |
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Water Resistance |
5 |
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Density |
1.30 g/cm3 |
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Residue on 80 Mesh |
5.0% max |
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Water Soluble |
1.0% max |
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Volatile 105 °C |
1.0% max |
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