- Direct Red 31
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- $7.00
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2020-01-10
- CAS:5001-72-9
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: 100KG
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| | Direct Red 31 Basic information |
| Product Name: | Direct Red 31 | | Synonyms: | Concorde Direct Red BB;Condirect Red CA;Dinamine Direct Red 12B;Direct Pink 3B;Direct Rose BS;Dycosdirect Red 12B;Hispamine Pink 12B;Icho Direct Red 12B | | CAS: | 5001-72-9 | | MF: | C32H21N5Na2O8S2 | | MW: | 713.64738 | | EINECS: | 225-669-8 | | Product Categories: | Organics;Dyes and Pigments | | Mol File: | 5001-72-9.mol |  |
| | Direct Red 31 Chemical Properties |
| | Direct Red 31 Usage And Synthesis |
| Chemical Properties | Reddish brown powder. Water solubility is still good, aqueous solution is bluish red, add concentrated hydrochloric acid to produce date red precipitate, add concentrated alkali to orange-brown. Soluble in ethylene glycol ether, slightly soluble in ethanol, reddish orange, insoluble in other organic solvents. Orange to brown in concentrated sulfuric acid, produces dark blue-red precipitate after dilution; brown solution with precipitate in concentrated nitric acid. Insoluble in concentrated alkali; date red in concentrated ammonia. | | Uses | Direct red 31 is a good dyeing agent for cotton fabrics. | | Properties and Applications |
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Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Soaping
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Water
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Fading
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Stain
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Fading
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Stain
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ISO
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3-4
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4
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2
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1-2
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1-2
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AATCC
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3-4
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4
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1
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1
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1-2
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| | References | [1] Sawada K, Ueda M. Adsorption behavior of direct dye on cotton in non-aqueous media[J]. Dyes and pigments, 2003, 58(1): 37-40. |
| | Direct Red 31 Preparation Products And Raw materials |
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