Unique characteristics of Dipropylene glycol methyl ether

Background

Dipropylene glycol methyl ether is an organic compound with a molecular formula of C7H16O3. Colorless viscous liquid with pleasant odor. Miscible with water and various organic solvents. It is prepared by hydration of 1,2-epoxy propylene to dipropylene glycol, and then with methanol[1]. It is mainly used as a solvent for paints and dyes, and is also a component of brake fluid.

Picture 1 Dipropylene glycol methyl ether liquid

Characteristic

Dipropylene glycol methyl ether is a colorless transparent liquid with a faint ether smell. Dipropylene glycol methyl ether has low toxicity. Dipropylene glycol methyl ether has low viscosity and low surface tension. Dipropylene glycol methyl ether has a moderate evaporation rate. Dipropylene glycol methyl ether has good solubility and coupling ability[2].

Dipropylene glycol methyl ether is miscible with water and has appropriate HLB value. It can dissolve grease, natural resin and rubber, cellulose, polyvinyl acetate, polyvinyl methyl/ethyl/butyraldehyde, alkyd resin, phenolic resin, Polymer chemicals such as urea resin.

Product Usage

Dipropylene glycol methyl ether is used as a solvent for nitrocellulose, ethyl cellulose, polyvinyl acetate, etc.; as a solvent for nitrocellulose, ethyl cellulose, polyvinyl acetate, etc., as a solvent for paints and dyes, and also as a brake oil components. It is used as a solvent for printing ink and enamel, and also as a solvent for washing of cutting oil and working oil. Used as a coupling agent for water-based dilution coatings (often mixed);

Dipropylene glycol methyl ether can be used as an active solvent for water-based coatings. Dipropylene glycol methyl ether can also be used as a solvent and coupling agent for household and industrial cleaners, grease and paint removers, metal cleaners, hard surface cleaners; dipropylene glycol methyl ether can be used as a base for solvent-based screen printing inks Solvent, coupling agent; dipropylene glycol methyl ether can be used as coupling agent and solvent for vat dye fabrics; dipropylene glycol methyl ether can be used as coupling agent and skin care agent in cosmetic formulations; dipropylene glycol methyl ether can be used as agricultural insecticide Stabilizer of agent; Dipropylene glycol methyl ether can be used as coagulant of ground brightener.

Application field

Dipropylene glycol methyl ether is mainly used as an excellent solvent for nitrocellulose, alkyd resin and maleic anhydride-modified phenolic resin, as an additive for jet fuel antifreeze and brake fluid, etc.; mainly as solvent, dispersant and diluent It is also used as fuel antifreeze, extractant, etc.

production method

It is obtained by hydration of 1,2-epoxy propylene to dipropylene glycol, which is then reacted with methanol. Another method is to react 1,2-propylene oxide with methanol under the catalysis of BF3, adjust the methanol ratio, first hydrolyze to dipropylene glycol, and then further react to generate this product. Fractional distillation can be used.

first-aid

Skin Contact: Remove contaminated clothing and rinse with running water.

Eye Contact: Lift the eyelids and flush with running water or normal saline. seek medical attention.

Inhalation: Quickly leave the scene to fresh air. Keep the airway open. If breathing is difficult, give oxygen. If breathing stops, give artificial respiration immediately. seek medical attention.

Ingestion: Drink enough warm water to induce vomiting. seek medical attention.

Fire-fighting measures

Hazardous characteristics: flammable in case of open flame and high heat.

Hazardous combustion products: carbon monoxide, carbon dioxide.

Extinguishing method: Move the container from the fire area to an open area as much as possible. Keep fire containers cool by spraying water until the fire is over. Containers in fire must be evacuated immediately if they have discolored or produced sounds from safety pressure relief devices. Extinguishing media: water mist, foam, dry powder, carbon dioxide, sand.

Emergency release treatment

Emergency treatment: quickly evacuate the personnel from the leaked contaminated area to a safe area, isolate them, and strictly restrict access. Cut off the source of ignition. It is recommended that emergency responders wear self-priming filter respirators (full face masks) and general work clothes. Cut off sources of leaks as much as possible. Prevent flow into restricted spaces such as sewers and flood drains. Small spills: Absorb or absorb with sand or other non-combustible materials. Large spills: Construct dikes or dig pits for containment. Transfer it to a tanker or a special collector with a pump, and recycle it or transport it to a waste disposal site for disposal.

personal protection

Respiratory protection: When the concentration in the air is high, a filter respirators (half masks) should be worn. In emergency rescue or escape, it is recommended to wear air breathing apparatus.

Eye Protection: Wear chemical safety goggles when the concentration in the air is high.

Body Protection: Wear general work protective clothing.

Hand Protection: Wear chemical resistant gloves.

Other protection: Smoking is strictly prohibited at the work site. Avoid prolonged repeated exposure. Regular physical examination. Pay attention to personal hygiene.

Storage and transportation characteristics

Attention should be paid to closed operation and comprehensive ventilation. Operators must undergo special training and strictly abide by operating procedures. It is recommended that operators wear filter respirators (half masks), chemical safety goggles, and chemical-resistant gloves. Keep away from fire and heat sources, and smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Prevent vapors from leaking into the workplace air. Avoid contact with oxidants and acids. When handling, it should be lightly loaded and unloaded to prevent damage to packaging and containers. Equipped with the corresponding variety and quantity of fire fighting equipment and leakage emergency treatment equipment. Empty containers may be harmful residues.

Store in a cool, ventilated warehouse. Keep away from fire and heat sources. It should be stored separately from oxidants and acids, and should not be mixed. Equipped with the appropriate variety and quantity of fire equipment. Storage areas should be equipped with emergency release equipment and suitable containment materials.

Reference

1 Gu Junyu, Li Jian, Zhang Fugang, Li Ling. Study on the determination method of dipropylene glycol methyl ether in workplace air by gas chromatography. 2013

2 Xu Xiaozuo, Deng Honglian, Quan Defu, etc. Determination of Dipropylene Glycol Methyl Ether in Air by Gas Chromatography. 2015

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