744255
Sulfur dioxide
≥99.98%
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About This Item
Linear Formula:
SO2
CAS Number:
Molecular Weight:
64.06
UNSPSC Code:
12142100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
231-195-2
Beilstein/REAXYS Number:
3535237
MDL number:
Assay:
≥99.98%
Form:
gas
vapor density
2.26 (21 °C, vs air)
Quality Segment
vapor pressure
1779 mmHg ( 21 °C)
assay
≥99.98%
form
gas
bp
−10 °C (lit.)
mp
−73 °C (lit.)
density
1.25 g/mL at 25 °C (lit.)
SMILES string
O=S=O
InChI
1S/O2S/c1-3-2
InChI key
RAHZWNYVWXNFOC-UHFFFAOYSA-N
Application
Sulfur dioxide (SO2) can be used:
- In the palladium catalyzed aminosulfonylation reaction.
- To prepare 1,4-diazabicyclo[2.2.2]octane [DABCO. (SO2)2] or DABSO, which is used as a reagent to synthesize N-aminosulfonamides via aminosulfonylation process using palladium catalyst.
- To synthesize polysulfobetaine (PSB/SO2) copolymer.
Packaging
500ml high pressure aluminum cylinder equipped with a stainless steel valve according to DIN 477-1.
Other Notes
For 744255-450G-EU packaging: 500 mL of aluminium cylinder equipped with brass valve.
For 744255-450G-EU: outlet fitting: DIN 477-1 no. 1, Z742160 or Z742161 are the recommended regulators.
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Signal Word
Danger
Precautionary Statements
Storage Class
2A - Gases
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
Target Organs
Respiratory system
Hazard Codes
Hazard Classifications
Acute Tox. 3 Inhalation - Eye Dam. 1 - Press. Gas Liquefied gas - Skin Corr. 1B - STOT SE 1 Inhalation
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