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Electron Microscopy Sciences

Chemicals for Microscopy

Certificates of Analysis

arrow14 NMA to Orange

msdsarrow12NMA, (Methyl-5-Norbornene-2,3-Dicarboxylic Anhydride)

C10H10O3   F.W. 178.19   CAS #25134-21-8
Specific Gravity @20/20°C : 1.245
b.p. @ 10mm Hg : 140°C
An epoxy hardener

RT 19000   450 ml 18.00 Add to Cart
RT 19001   4x450 ml 66.00 Add to Cart

msdsarrow12Nigrosin

(Acid Black 2; Gray R, B, BB; Indulin Black; Nigrosin W, WL ; Silver Gray; Steel Gray)
CAS #8005-03-06
Solubility: 10.0% Water; 0.0% Alcohol; 1.0% Cellosolve; 11.0% Glycol; 0.0% Xylene
For negative staining of bacteria. With Basic Fuchsin, staining bacteria spores. Dorner, Le Lait, 6, 8 (1926). Biochem. Biophys. Acta 69,159 (1963).

RT 19010   25g 34.00 Add to Cart

msdsarrow12Nile Blue A

(Basic Blue 12, Nile Blue Sulfate)
(C20H20N3O)2SO4   F.W. 732.84   CAS #3625-57-8

Solubility: 6.0% Water; 5.0% Alcohol; 5.0% Cellosolve; 5.0% Glycol; 0.25% Xylene.
Dye content: approx. 65%
Differentiates melamins and lipofuscins; Used in fat staining.
Lillie, Stain Tech., 31,151 (1956); J. Histochem., 4,377; Z. Anal. Chem. 260, 290 (1972).
For staining bone sections. Cytologia, 11, 261 (1940)

RT 19020   10g 15.00 Add to Cart

msdsarrow12Ninhydrin, Crystal, Reagent

(1,2,3-Triketohydrindene Monohydrate)
C9O4·H2O   F.W. 178.15   CAS #485-47-2

RT 19030   25g 62.00 Add to Cart

msdsarrow12Nitro Blue Tetrazolium Chloride

(Nitro, BT, p-Nitrotetrazolium Blue; 2, 2´-Di-p-nitrophenyl-5, 5´diphenyl-[3, 3´-dimethoxy-4, 4´-diphenylene] ditetrazolium chloride)
C40H30Cl2N10O6   F.W. 817.6   CAS 298-83-9 

Approx. 98% (TLC).
Contains up to 10% solvent. A substrate for dehydrogenases and other oxidases

0-5°C 19035-01   100mg 50.00 Add to Cart
0-5°C 19035-05   1gm 440.00 Add to Cart

Also available in tablet form. Tablet contains 10mg substrate per tablet.

0-5°C 19035-10   10 tablets/pk 50.00 Add to Cart
0-5°C 19035-12   25 tablets/pk 120.00 Add to Cart

msdsarrow12Nitrocellulose

Please see Parlodion Purified Strips.

RT 19220   10g 170.00 Add to Cart

msdsarrow12NSA, Nonenyl Succinic Anhydride

Specially Distilled EM Grade
F.W. 227   CAS #28928-97-4
b.p. 325°C
Viscosity: 102.8 at 25°C
Density: 1.08gm/cm3
An epoxy hardener specially distilled. The special distillation process offers you much clearer blocks than the standard NSA

RT 19050   450 ml 26.00 Add to Cart
RT 19051   4x450 ml 96.00 Add to Cart

msdsarrow12Orange II

(Acid Orange 7; Acid Orange II, Y or A; Gold Orange; Mandarin G; Orange A, P or R; Orange Extra; Tropaoelin OOO No.2)
C16H11N2O4SNa   F.W. 350.33   CAS #633-96-5
Solubility: 3.0% Water; 0.15% Alcohol; 2.5% Cellosolve; 8.0% Glycol; 0.0% Xylene
Dye Content: approx. 75%

A general tissue stain with Eosin and Azur-C. French, Stain Tech., 1, 79 (1926). Counterstain for Heidenhain's Hematoxylin in animal histology. A substitute for Orange G if a stronger yellow is desired for contrast. J. Lab. Med., 28, 995 (1943)

RT 19060   25g 16.00 Add to Cart

msdsarrow12Orange G, Certified, C.N. #DcO-13

(Acid Orange 10, Wood Orange 2G)
C16H10N2O7S2Na2   F.W.. 452.38   CAS #1936-15-8
Solubility: 8.0% Water; 0.22% Alcohol; 1.7% Cellosolve; 3.0% Glycol; 0.0% Xylene Dye Content: approx. 60%

Kornhauser's Quad stain for most elementary structures of tissues. Stain Tech., 18, 985 (1943) Mallory's tissue stain for connective tissue. Mallory, J. Exper. Med., 5,15 (1900). Used with safranin and tannic acid for showing shoot apex in plant tissue. Stain Tech., 18, 105 (1943).

RT 19070   25g 18.00 Add to Cart

Certificates of Analysis


Osmium Tetroxide to Papanicolaou arrow12