Hyderabad
08048036175
+919848399491
Laboratory Chemicals by MNC CHEMICALS SURGICALS

Cotton Blue

Phone Number

08048036175

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Email Address mnc.naveen@gmail.com

Mon-Thu: 10 AM - 2 PM • Fri: 3 PM - 7AM

Address Correspondence Address: Shop No. 20, 2nd Floor, Srirama Tower, Bogulkunta, Telangana

Hyderabad, India, 500001

Description

Cotton Blue is a water-soluble biological stain, also known as aniline blue (water-soluble), appearing as a dark blue to dark brown powder used primarily for staining fungal cell walls (chitin/cellulose) and collagen fibers in microscopy.​ Identity and Composition Chemical name: Aniline blue (cotton blue, water-soluble; CI 42755).​ Molecular formula: Complex triarylmethane dye mixture, typically C₃₁H₂₇N₃Na₂O₉S₃ or similar; molecular weight ~737 g/mol.​ Grade specifications: Microscopy grade with absorption maxima 595–610 nm, ratio λmax.P ±15 nm 1.00–1.03, soluble in water.​ Physical Properties Appearance: Dark blue/black powder or crystals, odorless.​ Solubility: Soluble in water; often prepared as 2.5% solution in 2% acetic acid or used in Lactophenol Cotton Blue mounts.​ Stability: Light-sensitive in solution; store powder in dark.​ Typical Uses Fungal microscopy: Stains hyphae, spores, and structures blue in Lactophenol Cotton Blue (LPCB) mounts.​ Histology: Collagen blue in Masson's trichrome stain; cellulose walls and chromosomes in plant tissues.​ Other: Paper/textile dyes, fluorescence microscopy with KOH.​ For catalog purposes: “Cotton Blue (aniline blue water-soluble), dark blue powder, microscopy grade, λmax 595–610 nm, for fungal/collagen staining; water-soluble.”​

Model No. N-CH1641

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