Neutral Red CAS#553-24-2

CAS Number: 553-24-2
Chemical Formula: C15H16N4.ClH
Synonyms:

Neutral Red, high purity biological stain, pure 25GR
AMinodiMethylaMinotoluaMinozine
N2,N2,7-TriMethylphenazine-2,8-diaMine hydrochloride

Appearance: Dark Green Solid

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

Neutral Red CAS#553-24-2

Neutral red is a hydrochloride obtained by combining the free base of neutral red with one equivalent of hydrochloric acid. Neutral red acts as a pH indicator, changing from red to yellow between pH 6.8 and 8.0. It has a role as a dye, an acid-base indicator and a two-colour indicator. It contains a neutral red(1+).

Neutral Red Chemical Properties

Melting point	290 °C (dec.) (lit.)
Boiling point	441.31°C (rough estimate)
bulk density	350-500kg/m3
density	1.1590 (rough estimate)
refractive index	1.6110 (estimate)
storage temp.	Store at +5°C to +30°C.
solubility	H2O: soluble10mg/mL
pka	6.7, 7.4(at 25℃)
form	Solid
Colour Index	50040
color	Very dark green
Appearance	Solid Powder
Odor	Odorless
PH	3.1 (10g/l, H2O, 20℃)
PH Range	6.8(red)-8(yellow)
Water Solubility	50 g/L
λmax	540nm, 533nm, 544nm, 529nm, 454nm
Merck	14,6488
BRN	3918740
Stability:	Stable. Incompatible with strong oxidizing agents.
Major Application	Fuel cell power generation system, liquid crystal displays, solor cells, sensors, thermochromic materials, coloring wood, detergents, assessment of tobacco smoke, cosmetics, detect bacterial infections, multidrug resistance inhibitors, treatment of burns, endodontic, diabetes, obesity, cancer, age-related macular degeneration, viral diseases
Biological Applications	Detecting pathogens,bacterial infections; treating age-related macular degeneration,burns,cancer,diabetes,obesity,fungal infections,viral diseases
InChI	1S/C15H16N4.ClH/c1-9-6-13-15(8-11(9)16)18-14-7-10(19(2)3)4-5-12(14)17-13;/h4-8H,16H2,1-3H3;1H
InChIKey	PGSADBUBUOPOJS-UHFFFAOYSA-N
SMILES	Cl.CN(C)c1ccc2nc3cc(C)c(N)cc3nc2c1
CAS DataBase Reference	553-24-2(CAS DataBase Reference)
EPA Substance Registry System	Neutral Red (553-24-2)

Safety Information

Hazard Codes	Xn,Xi
Risk Statements	68-36/37/38
Safety Statements	36/37-37/39-36-26-24/25
WGK Germany	3
RTECS	SG1400000
TSCA	TSCA listed
HS Code	32041300
Storage Class	11 - Combustible Solids
Toxicity	LD50 intraperitoneal in mouse: 432mg/kg

Product Application of Neutral Red CAS#553-24-2

Transition of pH Indicator: pH 6.8 - 8.0, red to yellow. Basic red 5 is a dye used in histology for staining nuclei. It is also a pH indicator. As such it is used in microbial culture media for differentation of bacteria. For example MacConkey agar contains it and lactose. Acidification by lactic acid turns on the Basic red 5. Therefore, colonies formed by bacteria that ferment lactose into lactic acid will turn red and stand out from the pale colonies of non-lactose-fermenting bacteria. Basic red 5 is also used in cell viability tests based on the ability to incorporate and bind it.

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