Dimethanol formal is a chemical whose molecular formula is C3H8O2. Colorless, clear, volatile and combustible liquid with chloroform odor and pungent odor. It is soluble in 3 times the water [the solubility in water at 20°C is 32% (weight)]. Miscible with most organic solvents.
Product Usage
It is mainly used for the production of anion-effect exchange resins, as well as solvents and special fuels. Its dissolving ability is stronger than ether and acetone, and methanol and azeotropic mixture can dissolve nitrocellulose with high nitrogen content. However, due to its strong anesthetic properties, it is not suitable to be used as a general solvent, and is usually used as a solvent for special sonication. It is also used in perfume manufacturing and production of artificial resins, as the reaction medium of Grignard reaction and Rapa (synthesis) reaction.
Health Hazards
Invasion route: inhalation, ingestion, transdermal absorption.
Health hazards: This product is irritating to mucous membranes and has anesthetic effects. Inhalation of vapor can cause nose and throat irritation; inhalation of high concentrations can cause dizziness. Damage to the eyes, damage can last for several days. Prolonged skin contact can cause dry skin.
Emergency handling methods
Leakage emergency response
Quickly evacuate personnel from the contaminated area to a safe area, isolate them, and strictly restrict access. Cut off the fire source. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and fire protective clothing. Cut off the source of leakage as much as possible. Prevent entry into restricted spaces such as sewers and flood drains. Small leakage: Use activated carbon or other inert materials to absorb. It can also be washed with a large amount of water, and the washing water is diluted and put into the waste water system. A large number of leaks: construct dikes or dig pits for storage; cover with foam to reduce steam disasters. Use explosion-proof pump to transfer to tank truck or special collector, recycle or transport to waste disposal site for disposal.
Protection measures
Respiratory protection: When the concentration in the air exceeds the standard, wear a filter gas mask (half mask).
Eye protection: wear chemical safety glasses.
Body protection: wear anti-static overalls.
Hand protection: wear rubber gloves.
Others: Smoking, eating and drinking are prohibited at the work site. After work, take a shower and change clothes. Pay attention to personal hygiene.
First aid measures
Skin contact: Take off contaminated clothing and wash skin thoroughly with soap and water.
Eye contact: Lift the eyelid and rinse with running water or normal saline. Seek medical attention.
Inhalation: quickly leave the scene to a place with fresh air. Keep the airway unobstructed. If breathing is difficult, give oxygen. If breathing stops, give artificial respiration immediately. Seek medical attention.
Ingestion: Drink enough warm water, induce vomiting, and seek medical attention.
Fire fighting method: Move the container from the fire scene to an open place as much as possible. Spray water to keep the fire container cool until the end of the fire extinguishing. If the container in the fire scene has changed color or produces sound from the safety relief device, it must be evacuated immediately. Extinguishing agent: alcohol-resistant foam, dry powder, carbon dioxide, sandy soil. Extinguishing with water is ineffective.
Nature and stability
Chemical properties: relatively stable to alkali. When heated with dilute hydrochloric acid, it is easily decomposed into formaldehyde and methanol; reacts with hydrogen iodide to generate sulfomethane and formaldehyde; methylal reacts with naphthalene in the presence of sulfuric acid to generate bis(α-naphthylmethane); and β- Phenethylamine reacts in the presence of hydrochloric acid to generate tetrahydroisoquinoline; reacts with phenylmagnesium iodide to generate methyl benzyl ether.
Stability Stable
Incompatibility Strong oxidants, acids
Conditions to avoid air, light
Polymerization hazards, no polymerization
Storage method
Storage precautions Store in a cool, ventilated warehouse. Keep away from fire and heat sources. The storage temperature should not exceed 29℃. Keep the container tightly closed. It should be stored separately from oxidants and acids, and avoid mixed storage. Do not store in large quantities or for long periods of time. Use explosion-proof lighting and ventilation facilities. It is forbidden to use mechanical equipment and tools that are prone to sparks. The storage area should be equipped with leakage emergency treatment equipment and suitable storage materials.
Packed in plastic barrels, each barrel has a net weight of 20kg. Store in a cool, dry, ventilated place, away from fire, heat, sun, and moisture. Store and transport in accordance with the regulations for flammable chemicals.