Nitrazine Yellow Chemical Properties

Melting point:

>250°C

storage temp. 

2-8°C

solubility 

Solubility Soluble in water, acetic acid ethanol

Colour Index 

14890

form 

Powder

color 

Brown to yellow to orange

PH Range

Bright yellow (6.0) to bright blue (7.2)

Water Solubility 

Dissolve in water at 1mg/ml

λmax

586nm

Major Application

Sensors, display devices, sol-gel matrix, electrorheological materials, diesel feuls/kerosines, detergent, fabric softner, food storage, method for identifying fresh & stale rice, in dialysis solution, screening of NAD-binding, monitoring secreted body fluids, lymph node, diagnostic pads, vaginal infection test method, assay for esterolyticenzyme activity, detecting pathogenic bacteria, diagnosis of bacterial vaginosis, detecting dysfunctional pregnancy, drugs screening

CAS DataBase Reference

5423-07-4(CAS DataBase Reference)

EPA Substance Registry System

2,7-Naphthalenedisulfonic acid, 3-[(2,4-dinitrophenyl)azo]-4-hydroxy-, disodium salt (5423-07-4)

Safety Information

Hazard Codes 

F

Risk Statements 

5

Safety Statements 

15-22-24/25

WGK Germany 

3

TSCA 

Yes

HS Code 

29270000

MSDS

• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich

Nitrazine Yellow Usage And Synthesis

Chemical Properties

bordeaux to brown powder, soluble in water, dilute acid and dilute alkali. The maximum absorption wavelength is 586nm.

Uses

Nitrazine Yellow is a pH-sensitive azo dye. It changes color from yellow to blue in pH range 6.0–7.0 and is widely used in microscopy. Dyes and metabolites.

Application

Nitrazine Yellow is used to test vaginal pH during late pregnancy to determine the breakage of the amniotic sac. To perform a fecal pH test for diagnosing intestinal infections or other digestive problems. In civil engineering, to determine the carbonatation spread in concrete structures and therefore assess the state of the rebar's passivation film.

Nitrazine Yellow(5423-07-4)Related Product Information

• Lithium nitrate
• LANTHANUM NITRATE
• Ferric nitrate
• CERIUM(III) NITRATE HEXAHYDRATE
• Ferric nitrate nonahydrate
• Erbium(III) nitrate pentahydrate
• Cobaltous nitrate hexahydrate
• NICLOFOLAN
• Ceric ammonium nitrate
• Isosorbide dinitrate
• Sodium nitroprusside dihydrate
• Lanthanum(III) nitrate hexahydrate
• THORIUM NITRATE HYDRATE
• ZIRCONIUM DINITRATE OXIDE
• MERCUROUS NITRATE
• 1-Naphthol-3,6-disulfonic acid disodium salt
• 1-Naphthol
• Naphthalene-2,7-disulfonic acid