Nioxime
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Basic information
- CAS
492-99-9- Standard SMILES
ON=C1CCCCC1=NO- InChIKey
CUNNCKOPAWXYDX-UHFFFAOYSA-N- Molecular formula
- C6H10N2O2
- Average molar mass
- 142.158 g/mol
- Monoisotopic mass
- 142.07422756
Names & identifiers
- Preferred name
- Nioxime
- IUPAC
- N,N'-Cyclohexane-1,2-diylidenedihydroxylamine
- English name
- 1,2-Cyclohexanedione dioxime
- Molecular formula
- C6H10N2O2
- Molecular weight
- 142.16
Names & synonyms
NIOXIMENioximNyoximeNSC 4076NIOXIME(R)NIOXIME GRNioxime >Nioxime? Nioxime(rgCyclohexanedionedioximeCyclohexan-1,2-dion-dioxim
Database identifiers
- CAS
492-99-9- PubChem CID
- 135492011
- DTXSID
DTXSID3060085- EC Number
- 207-769-3
Properties
Physicochemical properties
- Melting point
- 188 · 188-190 °C (dec.)
- Boiling point
- 259.72 °C · 259.72°C (rough estimate)
- Density
- 1.36 · 1.36
- refractive index
- 1.501 · 1.5010 (estimate)
- storage temp.
- 2 · 2-8°C
- solubility
- 0.8 % · 0.8% in water, readily soluble in alcohol, diethyl ether and acetone.
- form
- 184 · White crystalline material. Melting point 184-189°C.
- pka
- 10.7 · 10.70±0.20(Predicted)
- color
- White to Yellow to Orange
- Water Solubility
- Soluble in water.
- Merck
- 14 · 14,6559
- BRN
- 1909047 · 1909047
- InChI
- 1S/C6H10N2O2/c9-7-5-3-1-2-4-6(5)8-10/h9-10H,1-4H2/b7-5+,8-6+
- InChIKey
- CUNNCKOPAWXYDX-KQQUZDAGSA-N
- SMILES
- O\N=C1CCCCC/1=N\O
- CAS DataBase Reference
- 492 · 492-99-9(CAS DataBase Reference)
- FDA UNII
- 1 QT7SU5A8 · G1QT7SU5A8
- EPA Substance Registry System
- 1 · 1,2-Cyclohexanedione, dioxime (492-99-9)
- UNSPSC Code
- 12352100 · 12352100
- NACRES
- 22 · NA.22
- PPE
- 95 · Eyeshields, Gloves, type N95 (US)
- Hazard Codes
- Xn
- Risk Statements
- 36 · 36/37/38-22
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
Safety data
- F
- 10
- PPE
- Eyeshields, Gloves, type N95 (US)
- wgk
- 3
- tsca
- TSCA listed
- hs_code
- 2928.00.5000
- risk_code
- 36/37/38-22
- hazard_code
- Xn
- safety_code
- 22-24/25-36-26
- Storage Class
- 11 - Combustible Solids
Chemistry & industry
Applications
UsesNioxime is an analogue of dimethylglyoxime, with which, in general, the same determinations can be accomplished as with dimethylglyoxime. It is, however, more soluble in water than dimethylglyoxime so that it can be applied as an aqueous solution for the precipitation of metal complexes. In this way the potential error caused by the increased solubility of the complex in the presence of alcohol is eliminated. In gravimetric determinations the higher molecular weight of nioxime presents a further advantage (the molecular weight of the nioxime complex of nickel is 340.99, while that of the nickel complex of dimethylglyoxime is 288.91). Recently nioxime has been successfully applied for the gravimetric determination of bismuth/34 , 477) The bismuth nioxime complex was precipitated selectively from a solution containing about 30 cations (among them nickel and palladium) using the masking action of EDTA at about pH 12.
Uses1,2-Cyclohexanedione dioxime acts as a chelating ligand forming complexes with many transition metal ions like Co, Fe and Ni. It is used in photometric detection of metal ions.
UsesAnalytical reagent for nickel and palladium.
Upstream & downstream products
Upstream raw materials
Downstream products
Related reactions
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Compound notes
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