7719-09-7
Product Name:
Thionyl chloride
Formula:
Cl2OS
Synonyms:
Sulfurous acid dichloride, Sulfurous oxychloride;Thionyl chloride
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Thionyl chloride appears as a colorless to yellow fuming liquid with a suffocating pungent odor. Boiling point 79 °C. A lachrymator. Highly corrosive and toxic. Long-term inhalation of low concentrations or short-term inhalation of high concentrations has adverse health effects. |
|---|---|
| Color/Form | Colorless to pale yellow or reddish liquid |
| Odor | Suffocating odor |
| Boiling Point | 169 °F at 760 mmHg (NIOSH, 2023) |
| Melting Point | -156 °F (NIOSH, 2023) |
| Solubility | Reacts with water (NIOSH, 2023) |
| Density | 1.64 (NIOSH, 2023) - Denser than water; will sink |
| Vapor Density | 4.1 (Air = 1) |
| Vapor Pressure | 100 mmHg at 70 °F (NIOSH, 2023) |
| Stability/Shelf Life | Stable under recommended storage conditions. |
| Decomposition | Hazardous decomposition products formed under fire conditions - Sulfur oxides, hydrogen chloride gas. |
| Heat of Vaporization | 31.0 kJ/mol |
| Surface Tension | 34.0 mN/m at 18 °C |
| Refractive Index | Index of refraction 1.517 at 20 °C/D |
| Other Experimental Properties | Decomposes at 140 °C |
| Chemical Classes | Toxic Gases & Vapors -> Acid Halides |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Corrosion Corrosives GHS05  Skull and Crossbones Acute Toxicity GHS06 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H314:Skin corrosion/irritation H331:Acute toxicity,inhalation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
COMPUTED DESCRIPTORS
| Molecular Weight | 118.97 g/mol |
|---|---|
| XLogP3 | 1.5 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 0 |
| Exact Mass | 117.9046912 g/mol |
| Monoisotopic Mass | 117.9046912 g/mol |
| Topological Polar Surface Area | 36.3 Ų |
| Heavy Atom Count | 4 |
| Formal Charge | 0 |
| Complexity | 29 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Thionyl chloride appears as a colorless to yellow fuming liquid with a suffocating pungent odor. Boiling point 79 °C. A lachrymator. Highly corrosive and toxic. Long-term inhalation of low concentrations or short-term inhalation of high concentrations has adverse health effects.