Dimethoxymethane
Chemical Name Dimethoxymethane
CAS No 109-87-5
Molecular Formula C3H8O2
Molecular weight 76.10
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Products Description of Dimethoxymethane CAS#109-87-5
Dimethoxymethane (methylal) industrial grade purity ≥ 99%, a colorless clear liquid with ether‑like odor. Melting point −105 °C, boiling point 41–42 °C. Vapor pressure 20.5 kPa (20 °C), relative density 0.860 (20 °C). Soluble in water (33% at 20 °C) and miscible with many organic solvents. Stable under normal conditions; incompatible with strong oxidizing agents.
Parameters
| Item | Value |
| Melting point | −105 °C (lit.) |
| Boiling point | 41–42 °C (lit.) |
| density | 0.860 g/mL at 20 °C (lit.) |
| vapor pressure | 205 hPa (20 °C) |
| refractive index | n20/D 1.353(lit.) |
| Fp | −18 °C |
| storage temp. | 2–8°C |
| solubility | 33 g/L (20 °C) |
| form | Liquid |
| color | Clear colorless |
| Odor | Ethereal, mild sweet odor |
| explosive limit | 2.2–14.0%(V) |
| Water Solubility | 33 g/L (20 °C) |
| BRN | 1697087 |
| Exposure limits | ACGIH: TWA 1000 ppm; NIOSH: TWA 1000 ppm |
| Stability | Stable. Extremely flammable. Incompatible with strong oxidants. May form peroxides over time. |
| InChIKey | HFPLXUQKPLVCQA-UHFFFAOYSA-N |
| LogP | 0.15 at 25 °C |
| CAS DataBase Reference | 109-87-5(CAS DataBase Reference) |
| NIST Chemistry Reference | Dimethoxymethane(109-87-5) |
| EPA Substance Registry System | Dimethoxymethane (109-87-5) |
Safety Information
| Item | Value |
| Hazard Codes | F+,Xi,F |
| Risk Statements | 12-19-36/37/38-11 |
| Safety Statements | 16-23-26-3/7-33-36-9 |
| RIDADR | UN 1234 3/PG 2 |
| WGK Germany | 1 |
| RTECS | PA8750000 |
| F | 19 |
| Autoignition Temperature | 237 °C |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29091900 |
| Hazardous Substances Data | 109-87-5(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rat: 6000 mg/kg; LD50 dermal Rabbit > 20000 mg/kg |
Product Application of Dimethoxymethane CAS#109-87-5
Dimethoxymethane (CAS#109-87-5) is widely used as a solvent in coatings, inks, and resins. It serves as a reagent in organic synthesis and a fuel additive. It is also used in fragrance formulations and pharmaceutical manufacturing processes.
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