120-18-3

Name Naphthalene-2-sulfonic acid
CAS 120-18-3
EINECS(EC#) 204-375-3
Molecular Formula C10H8O3S
MDL Number MFCD00004089
Molecular Weight 208.23
MOL File 120-18-3.mol
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Chemical Properties

Appearance Nondeliquescent, white plates.Soluble in water, alcohol, and ether. Combustible.
Melting point  124 °C
Boiling point  317.43°C (rough estimate)
density  1.44 g/cm
vapor pressure  2.33Pa at 20℃
refractive index  1.4998 (estimate)
storage temp.  Inert atmosphere,Room Temperature
solubility  water: freely soluble(lit.)
form  solid
pka 0.27±0.10(Predicted)
color  White
Water Solubility  Soluble in water.
Sensitive  Hygroscopic
Merck  6377
InChI 1S/C10H8O3S/c11-14(12,13)10-6-5-8-3-1-2-4-9(8)7-10/h1-7H,(H,11,12,13)
InChIKey KVBGVZZKJNLNJU-UHFFFAOYSA-N
SMILES OS(=O)(=O)c1ccc2ccccc2c1
LogP -0.944 at 23℃
Uses
Starting point in the manufacture of β-naphthol, β-naphtholsulfonic acid, β-naphthylaminesulfonic acid, etc.
CAS DataBase Reference 120-18-3(CAS DataBase Reference)
EPA Substance Registry System 120-18-3(EPA Substance)
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Safety Data

Symbol(GHS)  Corrosion (GHS05)
GHS05
Signal word  Danger
Hazard statements  H290-H314
Precautionary statements  P260-P280-P301+P330+P331-P303+P361+P353-P305+P351+P338+P310
Hazard Codes  C,F
Risk Statements 
R35:Causes severe burns.
R34:Causes burns.
R11:Highly Flammable.
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S16:Keep away from sources of ignition-No smoking .
RIDADR  UN 2583 8/PG 2
WGK Germany  1
RTECS  QK1225000
Hazard Note  Corrosive
TSCA  Yes
REACH Registrations Active
HazardClass  8
PackingGroup  III
HS Code  2904100090
Storage Class 8A - Combustible corrosive hazardous materials
Hazard Classifications Eye Dam. 1
Met. Corr. 1
Skin Corr. 1A

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Material Safety Data Sheet(MSDS)

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