6640-22-8

Name 4,4'-Methylenebis(3-hydroxy-2-naphthoic acid) disodium salt
CAS 6640-22-8
EINECS(EC#) 229-653-1
Molecular Formula C23H14Na2O6
MDL Number MFCD00036183
Molecular Weight 432.33
MOL File 6640-22-8.mol
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Chemical Properties

Appearance pale yellow to yellow powder
Melting point  300 °C
density  1.55[at 20℃]
vapor pressure  0.001Pa at 25℃
storage temp.  Desiccate at RT
solubility  insoluble in EtOH; ≥18 mg/mL in H2O; ≥28.6 mg/mL in DMSO
form  solid
color  Pale yellow
Water Solubility  43g/L at 20℃
LogP -3.2 at 20℃
CAS DataBase Reference 6640-22-8(CAS DataBase Reference)
EPA Substance Registry System 6640-22-8(EPA Substance)

Safety Data

Hazard Codes  Xn
Risk Statements 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R37/38:Irritating to respiratory system and skin .
R41:Risk of serious damage to eyes.
R48:Danger of serious damage to health by prolonged exposure.
Safety Statements 
S24/25:Avoid contact with skin and eyes .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S22:Do not breathe dust .
WGK Germany  3
TSCA  TSCA listed
HS Code  2918.29.7500

Hazard Information

Material Safety Data Sheet(MSDS)

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