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CAS RN: 2098851-56-8 | Product Number: U0113

Sulfur Dioxide 1-Methylpyrrolidine Adduct

Purity: >96.0%(T)
10   19  
≥20  2  

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* The storage conditions are subject to change without notice.

Product Number U0113
Purity / Analysis Method >96.0%(T)
Molecular Formula / Molecular Weight C__5H__1__1NO__2S = 149.21  
Physical State (20 deg.C) Liquid
Storage Temperature <0°C
Store Under Inert Gas Store under inert gas
Condition to Avoid Air Sensitive,Heat Sensitive
CAS RN 2098851-56-8
Appearance Light yellow to Amber to Dark green clear liquid
Purity(Neutralization titration) min. 96.0 %
Properties (reference)
Pictogram Pictogram Pictogram
Signal Word Danger
Hazard Statements H315 : Causes skin irritation.
H319 : Causes serious eye irritation.
H225 : Highly flammable liquid and vapor.
Precautionary Statements P501 : Dispose of contents/ container to an approved waste disposal plant.
P240 : Ground/bond container and receiving equipment.
P210 : Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P233 : Keep container tightly closed.
P243 : Take precautionary measures against static discharge.
P241 : Use explosion-proof electrical/ ventilating/ lighting/ equipment.
P242 : Use only non-sparking tools.
P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ eye protection/ face protection.
P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish.
P337 + P313 : If eye irritation persists: Get medical advice/ attention.
P305 + P351 + P338 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P362 + P364 : Take off contaminated clothing and wash it before reuse.
P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
P403 + P235 : Store in a well-ventilated place. Keep cool.
Related Laws:
Transport Information:
UN Number UN1993
Class 3
Packing Group II
H.S.code* 2933.99-000
*This code is applied to the products when TCI exports from Japan and not for import in your country.
Direct Synthesis of Lithium Pyridinesulfinate using TIMSO

To a solution of 5-bromo-2-methoxypyridine (2.5 mL, 19.3 mmol) in THF (100.0 mL) at -78 °C, n-BuLi (8.2 mL, 2.12 M in hexane, 17.4 mmol, 0.9 equiv.) is added slowly. The mixture is stirred for 40 minutes before U0113 (1.0 equiv.) is added slowly. After complete addition, the solution is allowed to warm to room temperature and the crude product is collected by vacuum filtration and washed with acetone (2 x 20 mL) and Et2O (2 x 20 mL) to yield the lithium pyridinesulfinate (3.4 g, 99%).


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