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| | Direct Black 38 Basic information |
| Product Name: | Direct Black 38 | | Synonyms: | chloramineblackert;chloramineblackex;chloramineblackexr;chloramineblackxo;chloraminecarbonblacks;chloraminecarbonblacksj;chloraminecarbonblacksn;CHLORAZOL BLACK, FOR MICROSCOPY | | CAS: | 1937-37-7 | | MF: | C34H28N9NaO7S2 | | MW: | 761.76 | | EINECS: | 217-710-3 | | Product Categories: | Dyes and Pigments;Organics | | Mol File: | 1937-37-7.mol |  |
| | Direct Black 38 Chemical Properties |
| Melting point | 109-110°C | | storage temp. | Amber Vial, Refrigerator, Under inert atmosphere | | solubility | DMSO (Slightly), Methanol (Slightly, Heated), Water (Slightly) | | form | Crystalline Powder | | Colour Index | 30235 | | color | Black | | Stability: | Light Sensitive | | CAS DataBase Reference | 1937-37-7(CAS DataBase Reference) | | EPA Substance Registry System | C.I. Direct Black 38 (1937-37-7) |
| | Direct Black 38 Usage And Synthesis |
| Chemical Properties | black crystalline powder | | Uses | Chlorozol Black E is a chitin-specific stain and used to detect fungal filaments. Dyes and metabolites, Environmental Testing.Environmental toxin on US EPA Toxic Release Inventory list (TRI) list. | | Preparation | 4-(4-Aminophenyl)benzenamine double nitriding, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?coupling, aniline diazo, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?group of adjacent a coupling, product again with Benzene-1,3-diamine coupling. | | General Description | Gray-black microcrystals or black powder. | | Air & Water Reactions | Azo dyes can be explosive when suspended in air at specific concentrations. Slightly soluble in water. | | Reactivity Profile | Direct Black 38 is an azo compound. Azo, diazo, azido compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases may form with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases form with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides. Incompatible with strong acids [NTP, 1992)]. | | Hazard | Confirmed carcinogen. Moderately toxic
by ingestion and inhalation. An eye irritant.
| | Health Hazard | ACUTE/CHRONIC HAZARDS: Direct Black 38 may be absorbed through the skin. When heated to decomposition it emits very toxic fumes of nitrogen oxides, disodium oxide and sulfur oxides. | | Fire Hazard | Flash point data for Direct Black 38 are not available; however, Direct Black 38 is probably combustible. | | Safety Profile | Confirmed carcinogen
with carcinogenic and tumorigenic data.
Moderately toxic by ingestion and
inhalation. An eye irritant. Mutation data
reported. When heated to decomposition it
emits very toxic fumes of NOx, Na2o, and
so2. | | Properties and Applications | black. Palm black powder. Soluble in water for green light black, solubility 40 g/l (85 ℃), and adequate soluble in alcohol for green light blue-black, right amount soluble in soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid is a deep red in blue, diluted Purple dark reddish brown for to red light black precipitation; In nitric acid solution for yellow brown (not completely); In strong hydrochloric acid for dark red light black solution (don’t). The dye solution to join strong hydrochloric acid for Purple dark reddish brown, precipitation; Concentrated sodium hydroxide solution is generated gray light blue precipitaten. Cellulose fiber of dyeing, the dye absorption rate as well, in 80 ℃ temperature when the biggest affinity. Can discharge. Used for cotton, viscose, silk, polyamide fiber and its blending fabric, leather, wood, biological and plastic color, also used as the raw material of black ink.
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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
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3
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3
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2
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2-3
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AATCC
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3
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3
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4-5
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3
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2
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| | Direct Black 38 Preparation Products And Raw materials |
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