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LC5634 Sulfur trioxide pyridine complex
for synthesis

 

Order number Packaging Quantity Price €
AC32634 Glass bottle 100 g 27.00

 

Product information
Hill Formula C5H5NO3S
Chemical formula C5H5N * O3S
HS Code 2942 00 00
EC number 247-683-3
Molar mass 159.16 g/mol
CAS number 26412-87-3

 

Chemical and physical data
Ignition temperature >350 °C
Solubility (20 °C) (decomposition)
Melting point 155 – 165 °C
Molar mass 159.16 g/mol
Bulk density 600 kg/m3
pH value (H2O) acidic

 

Safety information according to GHS
Hazard Statement(s) H302: Harmful if swallowed.
H315: Causes skin irritation.
H319: Causes serious eye irritation.
Precautionary Statement(s) P260: Do not breathe dust.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal Word Warning
Hazard Pictogram(s)
Storage class 8 A Combustible substances, corrosive
WGK WGK 2 water endangering
Disposal 12
Inorganic acids and anhydrides thereof should first be diluted or hydrolyzed by stirring carefully into ice water and then neutralized (protective gloves, fume cupboard!) with sodium hydroxide solution (Cat. No. 105587). Before filling into container D, check the pH with pH universal indicator strips (Cat. No. 109535). Fuming sulfuric acid should be carefully stirred dropwise into 40 % sulfuric acid (Cat. No. 109286). Ensure that plenty of ice is available for cooling! When sufficiently cool, treat the highly concentrated sulfuric acid as described above. Analogous to this procedure, other anhydrides can be converted into their corresponding acids. Acid gases (e.g. hydrogen halide, chlorine, phosgene, sulfur dioxide) can be introduced into dilute sodium hydroxide solution and after neutralization disposed of in container D.

 

Safety information
R Phrase R 22-36/38
Harmful if swallowed.Irritating to eyes and skin.
S Phrase S 22-26
Do not breathe dust.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
Categories of danger harmful, irritant
Hazard Symbol Harmful

 

Transport information
Declaration (transport by sea) IMDG-Code UN 3261 CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.(SULFURTRIOXIDE-PYRIDINE COMPLEX), 8, II, Segregation Group: 1 (Acids)
Declaration (transport by air) IATA-DGR UN 3261 CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.(SULFURTRIOXIDE-PYRIDINE COMPLEX), 8, II

 

Toxicological data
LD 50 oral LD50 rat 500 – 2000 mg/kg

 

Specifications
Assay (acidimetric) ≥ 97 %
Melting range
– lower value
≥ 160 °C
– upper value ≤ 170 °C