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Name: Polyoxymethylene dimethyl ethers 

Synonyms: DMMn, PODE, PODEn, PODME

MF: CH3O(CH2O)nCH3

*gr.: specific gravity

*CN: cetane number

DMM2 Name: 2,4,6-Trioxaheptane CAS: 628-90-0 Molecular weight: 106.121 Formula: C4H10O3
DMM3 Name: 2,4,6,8-Tetraoxanonane CAS: 13353-03-2 Molecular weight: 136.147 Formula: C5H12O4
DMM4 Name: 2,4,6,8,10-Pentaoxaundecane CAS: 13352-75-5 Molecular weight: 166.17 g/mol Formula: C6H14O5
DMM5 Name: 2,4,6,8,10,12-Hexaoxatridecane CAS: 13352-76-6 Molecular weight: 196.2 g/mol Formula: C7H16O6
DMM6 Name: 2,4,6,8,10,12,14-Heptaoxapentadecane CAS: 13352-77-7 Molecular weight: 226.22 g/mol Formula: C8H18O7
DMM7 Name: 2,4,6,8,10,12,14,16-Octaoxaheptadecane CAS: 13353-04-3 Molecular weight: 256.25 g/mol Formula: C9H20O8
DMM8 Name: 2,4,6,8,10,12,14,16,18-Nonaoxanonadecane CAS: 13352-78-8 Molecular weight: 286.28 g/mol Formula: C10H22O9

Application：

1. Oil products field: polymethoxydimethyl ether (DMM3-8), a new type of clean diesel blending component downstream of coal-based methanol, is a colorless and transparent liquid, with an oxygen content of 47%~50%, and its cetane number > 76, a flash point not lower than 55 ℃, no sulfur and no aromatic hydrocarbons, low cold filter point, good low-temperature fluidity, good compatibility with diesel, can be blended to 5%~20% in diesel, no need to supply oil to vehicle engine The transformation of the system can effectively improve its cetane number, lower the freezing point, lower the viscosity, improve the lubricity, improve the combustion performance and improve the thermal efficiency, and reduce the emission of PM2.5; The problem of insufficient combustion greatly improves the cleanliness of diesel exhaust emissions.

2. Solvent field: Polymethoxy dimethyl ether (DMM3-4, DMM3-6, and their individual components) is a high-grade industrial solvent with low toxicity, low odor, and no sensitization, and is suitable for both polar and non-polar substances. It has a strong dissolving ability and can replace mixed dibasic ester DBE, ethylene glycol ethyl ether acetate CAC, propylene glycol methyl ether acetate PMA, ether ester solvent PCE, ethylene glycol monobutyl ether (anti-white water), isofo Erketone 783, diacetone alcohol DAA, cyclohexanone CYC, 150#--200# solvent oil, etc. It can be widely used in furniture paint, baking paint, coil paint, floor paint, water-based paint, ink, high and low-grade paint, resin, adhesive, and other industries. The soluble substances include polyurethane resin, acrylic resin, polyester resin, Alkyd resin, epoxy resin, cellulose acetate, polyurethane, nitrocellulose, etc. As a very important special solvent, many industries are developing and testing it, and its application fields are very wide.

3. Electronic field: Because DMMn and its single components have good multi-compatibility, stable properties, difficult to form peroxides, and various selectivity of boiling point and melting point, this product can be used in cleaning, etching, solute-solvent, etc. of electronic products.

4. 365bet娱乐 field: Polymethoxy dimethyl ether has the property of ether, and it is not easy to form peroxides. It can replace commonly used ether solvents in the chemical field. It is not only light in odor but also safe for distillation and recovery. Polymethoxydimethyl ether contains multiple formaldehyde monomers in the molecule and can be used as an anhydrous formaldehyde donor under suitable conditions, with good fluidity and easy transportation. And because of its good amphoteric characteristics, it can be used as an emulsifier for pesticides, granulation oil, etc.

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