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4940-39-0

Name 4-Oxo-4H-1-benzopyran-2-carboxylic acid
CAS 4940-39-0
EINECS(EC#) 225-583-0
Molecular Formula C10H6O4
MDL Number MFCD00006838
Molecular Weight 190.15
MOL File 4940-39-0.mol
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Chemical Properties

Appearance white to light yellow crystal powder
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
form  Powder
pka 2.28±0.20(Predicted)
color  White to beige
Water Solubility  sparingly soluble
Merck  14,2237
BRN  146442
CAS DataBase Reference 4940-39-0(CAS DataBase Reference)

Safety Data

Hazard Codes  Xi
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S37/39:Wear suitable gloves and eye/face protection .
WGK Germany  3
RTECS  DJ2476000
Hazard Note  Irritant
HS Code  29329990
Toxicity
LD50 intraperitoneal in mouse: 585mg/kg

Hazard Information

Material Safety Data Sheet(MSDS)

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