Products Categories
| CAS No.: | 703-59-3 |
|---|---|
| Name: | HOMOPHTHALIC ANHYDRIDE |
| Article Data: | 40 |
| Molecular Structure: | |
|
|
|
| Formula: | C9H6O3 |
| Molecular Weight: | 162.145 |
| Synonyms: | 1,3-Isochromandione(7CI);o-Toluic acid, a-carboxy-, cyclic anhydride (8CI);1H-Isochromene-1,3(4H)-dione;Benzeneacetic acid, 2-carboxy-, cyclic anhydride;Homophthalic acid anhydride;Homophthalic anhydride;NSC 2825;NSC 401693; |
| EINECS: | 211-873-4 |
| Density: | 1.347 g/cm3 |
| Melting Point: | 140-142 °C(lit.) |
| Boiling Point: | 324.5 °C at 760 mmHg |
| Flash Point: | 159 °C |
| Solubility: | Decomposes in water. |
| Appearance: | slightly yellow to beige or light green powder |
| Hazard Symbols: |
 Xi
|
| Risk Codes: | 36/37/38 |
| Safety: | 26-36 |
| PSA: | 43.37000 |
| LogP: | 0.92610 |
- 81281-59-67-Benzylideneaminotheophylline
- 82993-81-5D-threo-Ritalinic acid hydrochloride
- 73441-42-6METHYL-5-CHLORO-2,2-DIMETHYLVALERATE
- 852475-26-4MC1568
- 958254-66-51H-Imidazo[4,5-b]pyridine-2-carboxaldehyde, 1-methyl-, hydrochloride
- 99170-93-1N-Methyl-2-oxazolamine
- 717878-06-31-(4-fluorophenyl)-4-nitro-1H-imidazole
- 914458-26-7[5-(2-fluorophenyl)-1-pentyl-1H-pyrrol-3-yl]-1-naphthalenyl-Methanone
- 894852-01-87-BROMO-2,2-DIMETHYL-2H-PYRIDO[3,2-B][1,4]OXAZIN-3(4H)-ONE
- 71825-51-92-methyl-2-(4-nitrophenyl)propanenitrile
What can I do for you?
Get Best Price
Chemistry
IUPAC Name: 4H-isochromene-1,3-dione
Following is the structure of 1H-2-Benzopyran-1,3(4H)-dione (CAS NO.703-59-3):
Empirical Formula: C9H6O3
Molecular Weight: 162.1421 g/mol
Index of Refraction: 1.584
Molar Refractivity: 40.29 cm3
Molar Volume: 120.3 cm3
Density: 1.347 g/cm3
Flash Point: 159 °C
Sensitive: Moisture Sensitive
Surface Tension: 52 dyne/cm
Melting point: 140-142 °C(lit.)
Storage temp.: Refrigerator (+4°C)
Enthalpy of Vaporization: 56.66 kJ/mol
Boiling Point: 324.5 °C at 760 mmHg
Vapour Pressure of 1H-2-Benzopyran-1,3(4H)-dione (CAS NO.703-59-3): 0.000244 mmHg at 25 °C
Appearance of 1H-2-Benzopyran-1,3(4H)-dione (CAS NO.703-59-3): slightly yellow to beige or light green powder
Canonical SMILES: C1C2=CC=CC=C2C(=O)OC1=O
InChI: InChI=1S/C9H6O3/c10-8-5-6-3-1-2-4-7(6)9(11)12-8/h1-4H,5H2
InChIKey: AKHSBAVQPIRVAG-UHFFFAOYSA-N
Toxicity Data With Reference
1H-2-Benzopyran-1,3(4H)-dione (CAS NO.703-59-3) hasn't been listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65. And the toxicological properties have not been fully investigated.
Safety Profile
Hazard Codes: 
Xi
Risk Statements: 36/37/38
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36:Wear suitable protective clothing.
WGK Germany: 3
F: 10-21
Specification
1H-2-Benzopyran-1,3(4H)-dione , its cas register number is 703-59-3. It also can be called Homophthalic anhydride ; and Benzoglutaric anhydride .
1H-2-Benzopyran-1,3(4H)-dione (CAS NO.703-59-3) is hazardous, so the first aid measures and others should be known. Such as: When on the skin: first, should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly, get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While, it's inhaled: Remove from exposure and move to fresh air immediately. Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product : Wash mouth out with water, and get medical aid immediately.
1H-2-Benzopyran-1,3(4H)-dione (CAS NO.703-59-3) is moisture sensitive. It should avoid the condition like incompatible materials, exposure to moist air or water. It is not compatible with strong oxidizing agents, strong bases. And also prevent it to broken down into hazardous decomposition products: carbon monoxide, carbon dioxide. However, its hazardous polymerization will not occur. In addition, it should keep refrigerated. (Store below 4°C/39°F.) And it should be stored in a tightly closed container, or stored in a dry area. And it should be kept under a nitrogen blanket.