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NIGROSIN,
WATER SOLUBLE
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PRODUCT IDENTIFICATION |
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| CAS NO. | 8005-03-6 |
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| EINECS NO. |
not listed | |||||||||||||
| FORMULA | C22H14N6Na2O9S2 | |||||||||||||
| MOL WT. | 616.49 | |||||||||||||
| H.S. CODE | ||||||||||||||
| TOXICITY | ||||||||||||||
| SYNONYMS | C.I. Acid Black 2; C.I. 50420; biological stain; | |||||||||||||
| Nigrosinre ms crystal; Nigrosine powder w.s.; Nigrosin; Acid grain black; | ||||||||||||||
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CHEMICAL FAMILY |
Aniline derivatives |
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CLASSIFICATION |
Acid Dye |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE |
black powder | |||||||||||||
| MELTING POINT | 275 C | |||||||||||||
| BOILING POINT | ||||||||||||||
| SPECIFIC GRAVITY | ||||||||||||||
| SOLUBILITY IN WATER | Soluble | |||||||||||||
| AUTOIGNITION | ||||||||||||||
| pH | ||||||||||||||
| VAPOR DENSITY | ||||||||||||||
| NFPA RATINGS | Health: 1; Flammability: 0; Reactivity: 0 | |||||||||||||
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REFRACTIVE INDEX |
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| FLASH POINT |
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| STABILITY | Stable under ordinary conditions | |||||||||||||
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GENERAL DESCRIPTION & APPLICATIONS |
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Nigrosine is a dark black pigment (or dye), obtained primarily from aniline. There are three kinds: water-, alcohol- (spirit-), or oil- soluble.
Nigrosine is used in dying of leather, wood and textiles. It is used in the manufacture of ink, shoe polish cream, carbon paper and toners.. It is also used in compounding resins include phenolic resins, styrenics, polyamides and urea resins. Nigrosin is acidic. Stain grade is used for negative cell staining. Rather than regular base stains like methylene blue or carbol fuchsin it has a special affinity for ganglion cells. Picric acid, Eosin, Nigrosin Acidic stains include Picric acid, Eosin, Nigrosin. Picronigrosin is a solution of nigrosin and picric acid in alcohol for staining use. Other applications are in cosmetics, indicators and colour smoke. |
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| SALES SPECIFICATION | ||||||||||||||
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APPEARANCE |
black powder | |||||||||||||
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WATER |
6.0% max | |||||||||||||
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WATER INSOLUBLE |
0.3% max | |||||||||||||
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PARTICLE SIZE |
80 mesh | |||||||||||||
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pH |
9.0 - 10.0 | |||||||||||||
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ASH |
17.0% max | |||||||||||||
| TRANSPORTATION | ||||||||||||||
| PACKING | 25kgs in bag or fiber drum | |||||||||||||
| HAZARD CLASS | This compound is in the EPA inventory under TSCA. | |||||||||||||
| UN NO. |
not regulated | |||||||||||||
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PRICE INFORMATION |
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