A1235712
Chromone-2-carboxylic acid , 97% , 4940-39-0
Synonym(s):
4-Oxo-4H-1-Benzopyran-2-carboxylic acid;Chromocarb;Chromone-2-carboxylic acid
CAS NO.：4940-39-0
Empirical Formula: C10H6O4
Molecular Weight: 190.15
MDL number: MFCD00006838
EINECS: 225-583-0
| Pack Size | Price | Stock | Quantity |
| 1g | RMB34.40 | In Stock |
|
| 5G | RMB107.20 | In Stock |
|
| 25G | RMB456.00 | In Stock |
|
| 100g | RMB1599.20 | In Stock |
|
| others | Enquire |
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 260 °C (dec.)(lit.) |
| Boiling point: | 285.64°C (rough estimate) |
| Density | 1.3366 (rough estimate) |
| refractive index | 1.5280 (estimate) |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | alcohol: soluble |
| pka | 2.28±0.20(Predicted) |
| form | Powder |
| color | White to beige |
| Water Solubility | sparingly soluble |
| Merck | 14,2237 |
| BRN | 146442 |
Description and Uses
Chromone-2-carboxylic acid is used in the cyclic form 3?-oxopyrazolidino[4?,5??2, 3]-chroman-4-one, gives the azide of chromone-2-carboxylic acid, the curtius rearrangement of which is used to synthesize a number of 2-acylaminochromones and it is an orally active antiallergic agent.
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36-37/39 |
| WGK Germany | 3 |
| RTECS | DJ2476000 |
| Hazard Note | Irritant |
| HS Code | 29329990 |
| Toxicity | LD50 intraperitoneal in mouse: 585mg/kg |
