| Formula / Notation | C9H6O4 |
|---|---|
| CAS Number | 485-47-2 |
| Molecular Weight | 178.14 |
| Melting Point | 466 to 469 °F (Decomposes) (NTP, 1992) |
| Solubility | 1 to 5 mg/mL at 68 °F (NTP, 1992) |
| Appearance | Ninhydrin appears as white to light yellow crystals or powder. Becomes anhydrous with reddening at 257-266 °F. (NTP, 1992) |
| Also Known As | 2,2-dihydroxyindene-1,3-dione; 485-47-2; Ninhydrin hydrate; 1,2,3-Indantrione monohydrate; 2,2-Dihydroxy-1H-indene-1,3(2H)-dione; 1H-Indene-1,3(2H)-dione, 2,2-dihydroxy-; Triketohydrindene hydrate; 2,2-Dihydroxy-1,3-indandione; 2,2-Dihydroxy-1,3-indanedione; 1,2,3-Indantrione, 2-hydrate |
| Category | Laboratory Reagents |
What is Ninhydrin?
Ninhydrin is a member of the class of indanones that is indane-1,3-dione bearing two additional hydroxy substituents at position 2. It has a role as a colour indicator and a human metabolite. It is a member of indanones, a ketone hydrate, a beta-diketone and an aromatic ketone.
Formula & Notation
IUPAC Name: 2,2-dihydroxyindene-1,3-dione
Other Names / Synonyms: 2,2-dihydroxyindene-1,3-dione; 485-47-2; Ninhydrin hydrate; 1,2,3-Indantrione monohydrate; 2,2-Dihydroxy-1H-indene-1,3(2H)-dione; 1H-Indene-1,3(2H)-dione, 2,2-dihydroxy-; Triketohydrindene hydrate; 2,2-Dihydroxy-1,3-indandione; 2,2-Dihydroxy-1,3-indanedione; 1,2,3-Indantrione, 2-hydrate
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 466 to 469 °F (Decomposes) (NTP, 1992) |
| Molecular Weight | 178.14 |
| Solubility | 1 to 5 mg/mL at 68 °F (NTP, 1992) |
| Appearance | Ninhydrin appears as white to light yellow crystals or powder. Becomes anhydrous with reddening at 257-266 °F. (NTP, 1992) |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Ninhydrin is a member of the class of indanones that is indane-1,3-dione bearing two additional hydroxy substituents at position 2. It has a role as a colour indicator and a human metabolite. It is a member of indanones, a ketone hydrate, a beta-diketone and an aromatic ketone.
Used as a synthetic reagent for transformations including oxidation, reduction, coupling, or functional group manipulation.
Hazardous reagent. May be toxic, corrosive, flammable, or reactive. Use in fume hood with full PPE. Consult SDS before use.
The formula or notation for Ninhydrin is: C9H6O4