regarding the extinction coefficient for product 198285,t due to the uncertain composition of the dye, providing the extinction coefficient is not feasible.
198285
Nigrosin
certified by the Biological Stain Commission
Synonym(s):
Acid black 2, Nigrosin water soluble
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About This Item
CAS Number:
Colour Index Number:
50420
MDL number:
UNSPSC Code:
12171500
NACRES:
NA.47
Pricing and availability is not currently available.
Recommended Products
grade
certified by the Biological Stain Commission
Quality Level
form
solid
solubility
H2O: 0.1%
H2O: soluble
λmax
570 nm
application(s)
diagnostic assay manufacturing
hematology
histology
storage temp.
room temp
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Suitability
Certified for use in Dorner′s spore stain. Used as a negative stain in place of India ink for spirochetes, bacteria, protozoa and fungi.
Used as a negative stain in place of India ink for spirochetes, bacteria, protozoa and fungi.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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What is the extinction coefficient for Nigrosin?
1 answer-
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During the certification testing for Product 198285, Nigrosin, what organism is used for testing?
1 answer-
The exact organism can vary, but typically a 2-4 day old culture of a rapid spore former such as Bacillus cereus is utilized.
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Is Product 198285, Nigrosin, soluble in ethanol?
1 answer-
Solubility is stated to be only 0.0 to 0.4% in ethanol.
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What is the molecular weight for Product 198285, Nigrosin?
1 answer-
No formula weight or empirical formula is available. The dye is innately a mixture of dyes.
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Has Product 198285, Nigrosin, been used to test for sperm viability?
1 answer-
Yes. 10% Nigrosin Water Soluble is often used with 5% aqueous Eosin Y to determine live versus dead sperm. A procedure is given in Kjeldsberg, CR and Knight JA; Body Fluids, Second Edition (ASCP Press, Chicago 1986), p 168.
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What is the Department of Transportation shipping information for this product?
1 answer-
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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What is the solubility of Product 198285, Nigrosin, in water?
1 answer-
The maximum solubility in water can vary from 5 to 10%, depending upon the lot number.
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What is the purity of Product 198285, Nigrosin, Water Soluble?
1 answer-
No dye purity is determined because the dye is a complex mixture of dyes with an unknown constitution.
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