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Name	Ninhydrin hydrate	EINECS	207-618-1
CAS No.	485-47-2	Density	1.714 g/cm³
PSA	74.60000	LogP	-0.25350
Solubility	0.1-0.5 g/100 mL at 20 °C in water	Melting Point	250 °C (dec.)(lit.)
Formula	C₉H₆O₄	Boiling Point	449.3 °C at 760 mmHg
Molecular Weight	178.144	Flash Point	239.7 °C
Transport Information	UN 1170 3/PG 2	Appearance	White to pale yellow crystalline powder
Safety	26-28A-45-16	Risk Codes	22-36/37/38-39/23/24/25-20/21/22-11
Molecular Structure		Hazard Symbols	Xn, T, F
Synonyms	1,3-Indandione,2,2-dihydroxy- (8CI);1H-Indene-1,2,3-trione, 2-hydrate;2,2-Dihydroxy-1,3-dioxoindan;2,2-Dihydroxy-1,3-indandione;2,2-Dihydroxy-1H-indene-1,3(2H)-dione;2,3-Dihydro-2,2-dihydroxy-1,3-dioxo-1H-indene;Indane-1,2,3-trione monohydrate;Triketohydrindene hydrate;	Article Data	82

Ninhydrin hydrate Synthetic route

: 606-23-5
1H-indene-1,3(2H)-dione

: 485-47-2
indan-1,2,3-trione hydrate

Conditions

Conditions	Yield
With N-Bromosuccinimide; dimethyl sulfoxide Ambient temperature;	94%
With oxygen; Sensitox; tetrabutyl ammonium fluoride In chloroform for 3h; Irradiation;	75%
With polymer bound rose bengal; tetrabutyl ammonium fluoride; oxygen In chloroform at 0℃; for 3h; Irradiation;	75%
Multi-step reaction with 2 steps 1: alcohol 2: diluted sulfuric acid View Scheme

: 83-33-0
inden-1-one

: 485-47-2
indan-1,2,3-trione hydrate

Conditions

Conditions	Yield
With N-Bromosuccinimide; dimethyl sulfoxide Ambient temperature;	85%
With selenium(IV) oxide; water In 1,4-dioxane at 180℃; for 0.0833333h; Temperature; Sealed tube; Microwave irradiation;	84%

: 615-13-4
2-indanone

: 485-47-2
indan-1,2,3-trione hydrate

Conditions

Conditions	Yield
With N-Bromosuccinimide; dimethyl sulfoxide Ambient temperature;	82%

: 20847-51-2
2,2-diethoxy-1H-indene-1,3(2H)-dione

: 485-47-2
indan-1,2,3-trione hydrate

Conditions

Conditions	Yield
With sulfuric acid In ethanol at 40℃; for 2h;	82%

: 65299-21-0
2,2-dimethoxy-1,3-indanedione

: 485-47-2
indan-1,2,3-trione hydrate

Conditions

Conditions	Yield
With sulfuric acid In ethanol at 40℃; for 2h;	82%

: 1283-97-2
phenyliodonium betaine of 1,3-indanedione

: 485-47-2
indan-1,2,3-trione hydrate

Conditions

Conditions	Yield
With water; nitric acid In chloroform at -5 - 0℃; for 0.166667h;	80%

: C30H23NO7*BF4(1-)*H(1+)

A: 485-47-2
indan-1,2,3-trione hydrate

B: 70780-36-8
2-hydroxy-2-(2-oxo-2-phenylethyl)-1H-indene-1,3(2H)-dione

Conditions

Conditions	Yield
In water for 12h;	A n/a B 68%

: 90271-93-5
β-bromoindenone

: 485-47-2
indan-1,2,3-trione hydrate

Conditions

Conditions	Yield
With bromine; dimethyl sulfoxide In benzene for 6h; Heating;	60%

: 623-11-0
1-methyl-4-nitrosobenzene

: 605-37-8
isonaphthazarine

A: 485-47-2
indan-1,2,3-trione hydrate

B: 528-46-1
phthalonic acid

C: 88-99-3
benzene-1,2-dicarboxylic acid

D: 708-14-5, 62283-01-6, 99266-05-4
phthalide-3-carboxylic acid

Conditions

Conditions	Yield
Produkt 5:Hydrindantin;

...Expand

: 3674-33-7
2-nitro-1,3-indanedione

: 485-47-2
indan-1,2,3-trione hydrate

Conditions

Conditions	Yield
Erwaermen;

Ninhydrin hydrate Chemical Properties

Synonyms:1,2,3-INDANTOINE, MONOHYDRATE;1,2,3-INDANTRIONE;1,2,3-TRIKETOHYDRINDENE MONOHYDRATE;1,2,3-TRIKETOHYDRINDEN HYDRATE;1,2,3-TRIKETOHYDRINDENE;1,2,3-TRIKETOHYDRINDENE 2-HYDRATE;1,2,3-TRIKETOHYDRINDENE HYDRATE;1,2,3-INDANETRIONE MONOHYDRATE;
The Molecular formula of Ninhydrin hydrate hydrate(485-47-2): C₉H₆O₄
The Molecular Weight of Ninhydrin hydrate hydrate(485-47-2): 178.14
Molecular Structure :

EINECS: 207-618-1
Melting point:250 °C (dec.)(lit.)
density:0.862
Flash point:13 °C
storage temp.:Store at RT.
Water Solubility:0.1-0.5 g/100 mL at 20 oC
Sensitive:Light Sensitive
Appearance: White to pale yellow crystalline powder

Ninhydrin hydrate Toxicity Data With Reference

1.		orl-rat LDLo:250 mg/kg		NCNSA6 National Academy of Sciences, National Research Council, Chemical-Biological Coordination Center, Review. 5 (1953),28.
2.		ipr-mus LD50:78 mg/kg		CRSBAW Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales. 151 (1957),719.

Ninhydrin hydrate Consensus Reports

Reported in EPA TSCA Inventory.

Ninhydrin hydrate Safety Profile

Poison by ingestion and intraperitoneal routes. When heated to decomposition it emits acrid smoke and fumes.
The Hazard Codes of Ninhydrin hydrate hydrate(485-47-2):

Xn,

F
The Risk Statements information of Ninhydrin hydrate hydrate(485-47-2):
11: Highly Flammable
22: Harmful if swallowed
20/21/22: Harmful by inhalation, in contact with skin and if swallowed
36/37/38: Irritating to eyes, respiratory system and skin
39/23/24/25: Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed
The Safety Statements information of Ninhydrin hydrate hydrate(485-47-2):
16: Keep away from sources of ignition - No smoking
26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36: Wear suitable protective clothing
45: In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
RIDADR:UN 1170 3/PG 2
WGK Germany:3
RTECS:NK5425000
F:8

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