2-Chloro-5-methylthiophene
- CAS NO.:17249-82-0
- Empirical Formula: C5H5ClS
- Molecular Weight: 132.61
- MDL number: MFCD01632145
- EINECS: 250-128-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 00:44:57
What is 2-Chloro-5-methylthiophene?
The Uses of 2-Chloro-5-methylthiophene
It is used in the synthesis of dithienylcyclopentene optical molecular switches. It is also used as an active pharmaceutical intermediate.
Properties of 2-Chloro-5-methylthiophene
| Boiling point: | 155-156°C |
| Density | 1.21 |
| Flash point: | 155-156°C |
| refractive index | 1.5356 |
| storage temp. | 2-8°C(protect from light) |
| form | clear liquid |
| color | Colorless to Light yellow to Light orange |
| Water Solubility | Not miscible or difficult to mix with water. |
| CAS DataBase Reference | 17249-82-0(CAS DataBase Reference) |
Safety information for 2-Chloro-5-methylthiophene
| Signal word | Warning |
| Pictogram(s) |
![]() Flame Flammables GHS02 ![]() Skull and Crossbones Acute Toxicity GHS06 |
| GHS Hazard Statements |
H226:Flammable liquids H302:Acute toxicity,oral H312:Acute toxicity,dermal H331:Acute toxicity,inhalation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P405:Store locked up. |
Computed Descriptors for 2-Chloro-5-methylthiophene
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