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Chlorosulfonic acid
Chlorosulfonic acid
- CAS:
- 7790-94-5
- MF:
- ClHO3S
- MW:
- 116.52
Properties
- Melting point:
- -80°C
- Boiling point:
- 151-152 °C/755 mmHg (lit.)
- Density
- 1.753 g/mL at 25 °C (lit.)
- vapor density
- 4 (vs air)
- vapor pressure
- 1 mm Hg ( 25 °C)
- refractive index
- n
20/D 1.433(lit.)
- Flash point:
- 158°C
- storage temp.
- Room Temperature, under inert atmosphere
- solubility
- Miscible with hydrocarbons.
- form
- Oily Liquid, Fuming In Air
- pka
- -6.49±0.15(Predicted)
- Specific Gravity
- 1.753
- color
- Yellow to brown
- PH Range
- 1
- Water Solubility
- reacts
- Sensitive
- Moisture Sensitive
- Merck
- 14,2165
- Stability:
- Stable, but reacts violently with water. In case of spills, mop up with sand - do not add water. Reacts with most metals to yield (flammable) hydrogen gas. Incompatible with strong bases, carbonates, water, combustible materials, strong oxidizing agents, most metals, organic materials, sulfides, cyanides, carbides.
- LogP
- -0.003 at 25℃
Safety Information
- Symbol(GHS)
GHS05,GHS06
- Signal word
- Danger
- Hazard statements
- H314-H330-H335
- Precautionary statements
- P260-P271-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
- Hazard Codes
- C
- Risk Statements
- 14-35-37
- Safety Statements
- 26-45
- RIDADR
- UN 1754 8/PG 1
- WGK Germany
- 1
- RTECS
- FX5730000
- TSCA
- Yes
- HazardClass
- 8
- PackingGroup
- I
- HS Code
- 28062000
Use
Chlorosulfonic acid is a strong oxidizing acid. Reacts violently with water, strong mineral acids and bases, alcohols, finely dispersed organic matter. Dangerously incompatible with combustible materials, nitrates, chlorates, metallic powders, carbides, picrates, and fulminates. Undergoes possibly violent reactions with acetic acid, acetic anhydride, acetonitrile, acrolein, acrylic acid, acrylonitrile, alkali, allyl alcohol, allyl chloride, ammonium hydroxide, aniline, butyraldehyde, cresol, cumene, diethyleneglycol methyl ether, diisopropyl ether, diphenyl ether, ethyl acetate, ethyl acrylate, ethylene chlorohydrin, ethylenediamine, ethylene glycol, glyoxal, hydrocarbons (hexane, heptane), hydrogen peroxide, isoprene, powdered metals, methyl ethyl ketone, propylene oxide, vinyl acetate. When heated to decomposition, Chlorosulfonic acid emits toxic fumes of hydrogen chloride and oxides of sulfur [Sax, 9th ed., 1996, p. 831]. Reaction with phosphorus accelerates out of control and culminates in an explosion [Heumann, K. et al., Ber., 1882, 15, p. 417]. Mixing chlorosulfuric acid and 98% sulfuric acid may evolve HCl [Subref: Anon, Loss Prev. Bull. 1977, (013), 2-3].
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