Disodium 2-(2,4-dinitrophenylazo)-1-hydroxynaphthalene-3,6-disulphonate
Basic information
- CAS
5423-07-4- Standard SMILES
O=[N+]([O-])c1ccc(N=Nc2c(S(=O)(=O)[O-])cc3cc(S(=O)(=O)[O-])ccc3c2O)c([N+](=O)[O-])c1.[Na+].[Na+]- InChIKey
XBLIFEQTVVSTIM-UHFFFAOYSA-L- Molecular formula
- C16H8N4Na2O11S2
- Average molar mass
- 542.4 g/mol
- Monoisotopic mass
- 541.942638
Overview
See also: Nitrazine Yellow (annotation moved to).
Names & identifiers
- Preferred name
- Disodium 2-(2,4-dinitrophenylazo)-1-hydroxynaphthalene-3,6-disulphonate
- IUPAC
- disodium;3-[(2,4-dinitrophenyl)diazenyl]-4-hydroxynaphthalene-2,7-disulfonate
- English name
- Nitrazine Yellow
- Molecular formula
- C16H11N4NaO11S2
- Molecular weight
- 522.39
Names & synonyms
Disodium 2-(2,4-dinitrophenylazo)-1-hydroxynaphthalene-3,6-disulphonate2,7-Naphthalenedisulfonic acid, 3-(2-(2,4-dinitrophenyl)diazenyl)-4-hydroxy-, sodium salt (1:2)2,7-Naphthalenedisulfonic acid, 3-[2-(2,4-dinitrophenyl)diazenyl]-4-hydroxy-, sodium salt (1:2)RefChem:589300Nitrazine Yellow5423-07-4Nitrazine paperPhenaphthazineNitrazol Yellowdelta Paper, indicatorstarbld00096314U1WVN6KUX
Show more names
CI 14890CI NO 14890Delta PaperNitramine yellowDeltadye indicatorNitrate nitrogen yellow
Nitrazine yellow IndicatorSCHEMBL155287Sodium 3-((2,4-dinitrophenyl)diazenyl)-4-hydroxynaphthalene-2,7-disulfonateSCHEMBL8380112NSC-9360disodium;3-[(2,4-dinitrophenyl)diazenyl]-4-hydroxynaphthalene-2,7-disulfonateMFCD00003938AKOS015903448
Database identifiers
Properties
Computed structural properties
- Topological polar surface area
- 268 Ų
- Hydrogen bond donors
- 1
- Hydrogen bond acceptors
- 13
- Rotatable bonds
- 2
- Heavy atoms
- 35
- Formal charge
- 0
- Complexity
- 969
Physicochemical properties
- Melting point
- 250 °C · >250°C
- storage temp.
- 2 · 2-8°C
- solubility
- Solubility Soluble in water, acetic acid ethanol
- Colour Index
- 14890 · 14890
- form
- Powder
- color
- Brown to yellow to orange
- PH Range
- Bright yellow (6.0) to bright blue (7.2)
- Water Solubility
- 1 mg/ml · Dissolve in water at 1mg/ml
- λmax
- 586 nm · 586nm
- ε(extinction coefficient)
- 35000 at · ≥35000 at 587-591nm in 0.1 M NaOH at 0.01g/L
- 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
- InChIKey
- XBLIFEQTVVSTIM-QIKYXUGXSA-L
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 50% (1 of 2) of reports.
Warning
H315 (50%): Causes skin irritation [Warning Skin corrosion/irritation]
P264, P280, P302+P352, P321, P332+P317, and P362+P364 (click each P-code to see the statement)
Aggregated GHS information provided per 2 reports by companies from 2 notifications to the ECHA C&L Inventory.
Safety data
- PPE
- Eyeshields, Gloves, type N95 (US)
- wgk
- 3
- tsca
- TSCA listed
- hs_code
- 29270000
- risk_code
- 5
- Signal word
- Danger
- Symbol(GHS)
- GHS07,GHS08
- hazard_code
- F
- safety_code
- 15-22-24/25
- Storage Class
- 11 - Combustible Solids
- Hazard statements
- H317-H340-H413
- Precautionary statements
- P501-P261-P273-P272-P202-P201-P280-P302+P352-P308+P313-P362+P364-P333+P313-P405
Chemistry & industry
Uses & manufacturing
General Manufacturing Information2,7-Naphthalenedisulfonic acid, 3-[2-(2,4-dinitrophenyl)diazenyl]-4-hydroxy-, sodium salt (1:2): ACTIVE
Applications
UsesNitrazine 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.
Suppliers
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Related reactions
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Compound notes
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