Benzenesulfonic acid, 4-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-, sodium salt (1:1) (CAS 633-96-5) — Citrus N/A Note Fragrance Ingredient
Benzenesulfonic acid, 4-_[2-_(2-_hydroxy-_1-_naphthalenyl)_diazenyl]_-_, sodium salt (1:1)
CAS 633-96-5
What Is Benzenesulfonic acid, 4-_[2-_(2-_hydroxy-_1-_naphthalenyl)_diazenyl]_-_, sodium salt (1:1)?
Benzenesulfonic acid derivatives are industrial chemicals sometimes used in specialized fragrance applications. This particular compound is rarely encountered by consumers outside professional contexts. Its primary relevance comes from being a precursor in certain synthetic fragrance pathways, though it has negligible direct olfactory impact itself.
Safety Profile
PROFESSIONAL USEWhat Does Benzenesulfonic acid, 4-_[2-_(2-_hydroxy-_1-_naphthalenyl)_diazenyl]_-_, sodium salt (1:1) Smell Like?
This compound has no significant odor profile as used in perfumery. It serves primarily as an intermediate in chemical synthesis rather than as a direct fragrance ingredient. Any olfactory characteristics would be masked by subsequent reactions in manufacturing processes.
2D Molecular Structure
SMILES: [Na+].OC1=C(N=NC2=CC=C(C=C2)S([O-])(=O)=O)C2=CC=CC=C2C=C1
Chemistry, Properties & Perfumer Guide
The Chemistry
This benzenesulfonic acid derivative belongs to the diazo compound class, characterized by the -N=N- functional group. Its primary industrial use is as a chemical intermediate rather than a direct fragrance material. The sodium salt form improves water solubility for certain synthesis applications. No significant chiral centers are present in this molecule.
Physical & Chemical Properties
| Appearance | Solid powder |
|---|---|
| Solubility | Water-soluble |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Industrial | Trace | Not applicable | Chemical intermediate only |
Classic Accords
Tip: This material is not used directly in fragrance compositions.
Alternatives & Comparisons
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not regulated by IFRA as it’s not a direct fragrance ingredient.
GHS Classification
RIFM Assessment
No RIFM assessment as this is not a direct fragrance material.
Sustainability
This synthetic compound is produced in controlled industrial settings. Environmental impact depends on specific manufacturing processes and waste stream management. Not considered renewable or biodegradable.
Explore Benzenesulfonic acid, 4-_[2-_(2-_hydroxy-_1-_naphthalenyl)_diazenyl]_-_, sodium salt (1:1)
Browse essential oils and aroma compounds.
Browse on iHerb →Affiliate disclosure: we may earn a small commission at no extra cost to you.
Physicochemical Properties
DTXSID: DTXSID0038881
Physical Properties
| Molecular Weight | 350.32 g/mol🔬 EPA CompTox |
| Density | 1.525 g/cm^3🔬 EPA CTX |
| Boiling Point | 304 °C📊 OPERA |
| Melting Point | 214 °C📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | -0.95 Log10 unitless🔬 EPA CTX |
| LogD (pH 5.5) | 0.6 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 0.6 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 9.29 Log10 unitless📊 OPERA |
| Water Solubility | 0.077 mol/L🔬 EPA CTX |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0 mmHg📊 OPERA |
Molecular Descriptors
| Topological Polar Surface Area | 102.15 Ų💻 Computed |
| H-Bond Donors | 1 count💻 Computed |
| H-Bond Acceptors | 6 count💻 Computed |
| Rotatable Bonds | 3 count💻 Computed |
| Aromatic Rings | 3 count💻 Computed |
Data Sources:
🔬 EPA Experimental data from U.S. EPA CompTox Chemicals Dashboard & CTX APIs. 📊 OPERA Predicted using EPA's OPERA QSAR models. 💻 Computed Calculated from SMILES using RDKit.
![Cyclopropanemethanol, 1-methyl-2-[[(1R,3R)-2,2,3-trimethylcyclopentyl]methyl]-, (1R,2R)- (CAS 1181244-95-0) — Woody Middle Note Fragrance Ingredient](https://thegoodscents.company/wp-content/uploads/2026/04/cyclopropanemethanol-1-methyl-2-1-1-768x439.webp)
