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92-83-1

Basic Information
CAS No.: 92-83-1
Name: Xanthene
Article Data: 126
Molecular Structure:
Molecular Structure of 92-83-1 (Xanthene)
Formula: C13H10 O
Molecular Weight: 182.222
Synonyms: Xanthene(6CI,7CI,8CI); 10H-9-Oxaanthracene; 9-Oxa-9,10-dihydroanthracene; NSC 46931
EINECS: 202-194-4
Density: 1.042 g/cm3 (20oC)
Melting Point: 101 - 102 C
Boiling Point: 310 - 312 C
Flash Point: 137.5°C
Solubility: Soluble (Soluble in alcohol)
Appearance: off-white crystals
Hazard Symbols: UN NO.
Risk Codes: R42/43
Safety: Moderately toxic by subcutaneous route. When heated to decomposition it emits acrid smoke and irritating fumes.
Transport Information: 25kgs
PSA: 9.23000
LogP: 3.38310
Synthetic route
90-47-1

xanth-9-one

92-83-1

xanthene

Conditions
ConditionsYield
With molybdenum trisulfide; hydrogen In octane at 240℃; under 75006 Torr; for 1.5h;98%
Stage #1: xanth-9-one With aluminum (III) chloride; lithium aluminium tetrahydride
Stage #2: Acidic conditions;
94%
With sodium bis(2-methoxyethoxy)aluminium dihydride In toluene at 23 - 60℃; for 3h; Solvent; Temperature; Inert atmosphere;90%
90-46-0

9-hydroxyxanthene

62-53-3

aniline

A

92-83-1

xanthene

B

90-47-1

xanth-9-one

C

33564-61-3

phenyl-xanthen-9-yl-amine

Conditions
ConditionsYield
methyltrioxorhenium(VII) In benzene for 48h; Ambient temperature;A n/a
B n/a
C 96%
492-21-7

9H-xanthene-9-thione

92-83-1

xanthene

Conditions
ConditionsYield
With phenylphosphane at 140℃; for 10h;93%
With disodium telluride In tetrahydrofuran; N,N-dimethyl-formamide for 48h; Heating;82%
With diphosphorus tetraiodide In benzene for 9h; Heating;56%
19434-34-5

2-(phenoxy)benzaldehyde

92-83-1

xanthene

Conditions
ConditionsYield
With indium(III) triflate In di-isopropyl ether at 95℃; for 24h; Inert atmosphere; Sealed tube;86%
With titanium tetrachloride In dichloromethane at 20℃; for 24h;85%

10H-dibenzo[b,e]iodinin-5-ium trifluoromethanesulfonate

92-83-1

xanthene

Conditions
ConditionsYield
With water; copper diacetate; sodium carbonate In N,N-dimethyl-formamide at 100℃; for 12h; Inert atmosphere; Sealed tube;85%
190837-45-7

2,7-di-tert-butyl-xanthene

A

38731-86-1

2-tert-butylxanthene

B

92-83-1

xanthene

Conditions
ConditionsYield
With Nafion-H; toluene for 24h; Heating;A n/a
B 80%
90-46-0

9-hydroxyxanthene

A

92-83-1

xanthene

B

90-47-1

xanth-9-one

Conditions
ConditionsYield
With manganese triacetate In acetic acid for 2h; Heating;A 17%
B 73%
With iodine In acetonitrile at 20℃; for 0.0833333h;A 43%
B 42%
With 2-oxoindole; 1,3-dichloro-1,1,3,3-tetrabutylstannoxane In dichloromethane at 20℃; for 10h;A 42%
B 13%
90-46-0

9-hydroxyxanthene

75-91-2

tert.-butylhydroperoxide

A

92-83-1

xanthene

B

90-47-1

xanth-9-one

C

71269-25-5

(tert-butyl)xanthyl peroxy-ether

D

6538-19-8

dixanthyl ether

Conditions
ConditionsYield
With 2-Picolinic acid In pyridine; acetic acid at 20℃; for 1h; Title compound not separated from byproducts;A 22%
B 66%
C 34%
D 18%
90-46-0

9-hydroxyxanthene

A

92-83-1

xanthene

B

90-47-1

xanth-9-one

C

71269-25-5

(tert-butyl)xanthyl peroxy-ether

D

6538-19-8

dixanthyl ether

Conditions
ConditionsYield
With 2-Picolinic acid; tert.-butylhydroperoxide In pyridine; acetic acid at 20℃; for 1h; Title compound not separated from byproducts;A 22%
B 66%
C 34%
D 18%
3137-39-1

bis(2-oxocyclohexyl)methane

A

92-83-1

xanthene

B

5899-19-4

o-(α-cyclohexylmethyl)phenol

Conditions
ConditionsYield
platinum on activated charcoal at 340 - 360℃;A 65%
B 3.6%
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Chemistry

Chemistry informtion about  Xanthene (CAS NO.92-83-1) is:
IUPAC Name: 9H-xanthene
Synonyms: 10h-9-Oxaanthracene ; 9h-Xanthene ; Dibenzo[A,E]Pyran ; Dibenzopyran, Tricyclic ; Xanthane ; Dibenzopyran ; Xanthan ; Xanthene
MF: C13H10O
MW: 182.22
EINECS: 202-194-4 
Melting Point: 101-102 °C(lit.)
Density: 1.159 g/cm3
Flash Point: 137.5 °C
Boiling Point: 311 °C at 760 mmHg
Vapour Pressure: 0.00106 mmHg at 25°C 
Enthalpy of Vaporization: 52.99 kJ/mol
Water Solubility: Soluble
Stability: Stable, Combustible,Incompatible with oxidizing agents.
Following is the molecular structure of  Xanthene (CAS NO.92-83-1) is:

Uses

 Xanthene (CAS NO.92-83-1) is used as a fungicide and it is also a useful intermediate in organic synthesis.

Production

Preparation Products: Xanthene-9-Carboxylic Acid
Raw Materials: Sodium Hydroxide→Diethyl Ether→Phenol→Phosphorus Pentoxide→2-Hydroxybenzyl Alcohol

Toxicity Data With Reference

1.    

scu-mus LD50:690 mg/kg

    ARZNAD    Arzneimittel-Forschung. Drug Research. 8 (1958),107.

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Moderately toxic by subcutaneous route. When heated to decomposition it emits acrid smoke and irritating fumes.
Hazard Codes: 
Xn: Harmful
Risk Statements:
R42/43: May cause sensitization by inhalation and skin contact.
Safety Statements:
S22: Do not breathe dust. 
S36/37: Wear suitable protective clothing and gloves.
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S24: Avoid contact with skin.
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection.
WGK Germany: 3
RTECS: ZD5520000
HS Code: 29181100

Specification

 Xanthene (CAS NO.92-83-1) is a yellow organic heterocyclic compound.
First Aid Measures:
Ingestion: If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. May cause digestive tract disturbances. Seek medical assistance.
Inhalation: Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult. May cause respiratory tract irritation. Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Skin: Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Remove contaminated clothing and shoes. May cause skin irritation.
Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Immediately flush with running water for at least 20 minutes. May cause eye irritation.
Handling and Storage:
Storage: Keep away from heat, sparks, and flame. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Keep containers tightly closed.
Handling: Ground and bond containers when transferring material. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.