HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 74331Generated: November 4, 2026
4-Hydroxy-3-methoxybenzaldehyde 2-((4-hydroxy-3-methoxyphenyl)methylene)hydrazone
VANILLIN AZINE · Vanillin azine,99% · TIMTEC-BB SBB005979 · VANILLIN AZINE 99% · Vanillaldehyde azine · Valproic Acid Impurity 44 · 4-HYDROXY-3-METHOXYBENZALAZINE · α,α'-Azinobis(2-methoxy-p-cresol)
https://huagongshe.com/en/chemical/74331
Identifiers & Physical Properties
| CAS No. | 1696-60-2 |
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| Molecular formula | C16H16N2O4 |
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| Average molar mass | 300.31 g/mol |
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| Monoisotopic mass | 300.111007 g/mol |
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| SMILES | COc1cc(C=NN=Cc2ccc(O)c(OC)c2)ccc1O |
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| InChIKey | GGQDJSIYHIRXDW-UHFFFAOYSA-N |
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| PubChem CID | 74331 |
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| EC No. | 628-732-1 |
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| DTXSID | DTXSID201132713 |
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Chemical & Physical Properties
| XLogP | 2.5 |
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| Topological polar surface area | 83.6 |
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| Hydrogen bond donors | 2 |
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| Hydrogen bond acceptors | 6 |
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| Rotatable bonds | 5 |
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| Heavy atoms | 22 |
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| Formal charge | 0 |
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| Complexity | 352 |
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| Melting point | 179-181 °C(lit.) |
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| Boiling point | 441.54°C (rough estimate) |
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| Density | 1.1782 (rough estimate) |
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| Refractive index | 1.6240 (estimate) |
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| EPA Substance Registry System | Benzaldehyde, 4-hydroxy-3-methoxy-, [(4-hydroxy-3-methoxyphenyl)methylene]hydrazone (1696-60-2) |
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| GHS pictogram | GHS07 |
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| Signal word | Warning |
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| GHS hazard statements | H315-H319-H335 |
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| GHS precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 |
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| Hazard symbols | Xi |
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| Risk statements (R) | 36/37/38 |
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| Safety statements (S) | 26-36 |
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| Water hazard class (WGK) | 3 |
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| TSCA inventory status | TSCA listed |
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Safety & Regulations
| GHS classification | WarningH315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 39 reports by companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies. |
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| Hazard Classes and Categories | Skin Irrit. 2 (100%) |
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| Water hazard class (WGK) | 3 |
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| TSCA inventory status | TSCA listed |
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| Risk statements (R) | 36/37/38 |
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| Signal word | Warning |
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| GHS pictogram | GHS07 |
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| Hazard symbols | Xi |
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| Safety statements (S) | 26-36 |
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| GHS hazard statements | H315-H319-H335 |
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| GHS precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 |
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