Taking advantage of proprietary technology, the C4 Derivatives Unit. has developed a wide range of products. These include 1,4-butanediol (1,4-BG) and its derivatives including tetrahydrofuran (THF) and poly(tetramethylene ether) glycol (PTMG). The group also produces maleic anhydride and its derivatives including gamma-butyrolactone (GBL) and N-methyl-2-pyrrolidone (NMP). Especially the 1,4-BG/THF joint production process has been highly valued by our customers. This technology has been exported overseas. New product development and production process innovation for our wide-ranging offerings are driven by our customers' increasingly sophisticated and diverse needs together with our tenacious pursuit of quality.

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PTMG

PTMG (Poly(tetramethylene ether)glycol / PTMG) is a linear polyether glycol with hydroxyl groups on both ends. As a polyol, it reacts readily with isocyanates (for example MDI, TDI), etc. to make resins with excellent properties.

  • Grades:
    PTMG250、PTMG650、PTMG850、PTMG1000、PTMG1300、PTMG1500、PTMG1800、PTMG2000、PTMG3000、PTMG4000(under development)
  • CAS No.:
    25190-06-1
  • Japan, Chemical Substances Control Law:
    METI-No. 7-129
  • Japan, Poisonous and Deleterious Substances Control Law:
    Not applicable.
  • Japan, Fire Services Law:
    Hazardous Material Class 4 Petroleums No.3 Hazardous Rank III (PTMG250)
    Hazardous Material Class 4 Petroleums No.4 Hazardous Rank III (PTMG650,850)
    Combustible Materials, Flammable Solids (PTMG1000, 1300, 1500, 1800, 2000, 3000, 4000(under development))

Maleic Anhydride

Maleic anhydride is produced by oxidation of benzene or a C4 hydrocarbon such as butane in the presence of a vanadium oxide catalyst. Maleic anhydride can be converted to maleic acid by hydrolysis and to esters by alcoholysis.

  • CAS: No. 108-31-6 (T)
  • EINECS: No. 203-571-6
  • Japan, Chemical Substances Control Law: METI-No. 2-1101
  • Japan, Industrial Safety and Health Law: ID No. 554 (SDS required)
  • Japan, Poisonous and Deleterious Substances Control Law: Not applicable.
  • Japan, Fire Services Law: Not applicable.

THF

THF (Tetrahydrofuran) is a stable compound with relatively low boiling point and excellent solvency. It is widely-used for dissolution and reaction of various substances. Also it is used as a starting material for the synthesis of poly(tetramethylene ether) glycol (PTMG), etc. Since 1982, Mitsubishi Chemical's Yokkaichi plant has produced high-purity, high-quality THF from butadiene using our proprietary technology.

  • CAS: No. 109-99-9 (T)
  • EINECS: No. 203-726-8
  • Japan, Chemical Substances Control Law: METI-No. 5-53
  • Japan, Industrial Safety and Health Law: No. 5-53, ID No. 367 (SDS required)
  • Japan, Poisonous and Deleterious Substances Control Law: Not applicable.
  • Japan, Fire Services Law: Hazardous Material Class 4 Petroleums No.1 (water-soluble liquid). Hazardous Rank II
  • U.N. Class: 3
  • U.N. No.: UN2056

NMP

NMP (N-Methyl-2-Pyrrolidone) is a polar solvent with outstanding characteristics. It has a wide range of applications because it offers very high solvency, high boiling point, low freezing point, and ease of handling.

  • CAS: No. 872-50-4 (T)
  • EINECS: No. 212-828-1
  • Japan Chemical Substances Control Law: METI-No. 5-113
  • Japan, Industrial Safety and Health Law: No. 8-1-1014
  • Japan, Poisonous and Deleterious Substances Control Law: Not applicable.
  • Japan, Fire Services Law: Hazardous material Class 4 Petroleums No.3 (water-soluble liquid).

GBL

GBL has a wide range of practical applications because of its low freezing point, high boiling point, and a unique combination of solvent and electrical properties. It has applications as a solvent for special resins, in photography, in batteries, and as an electrolyte. Also a number of derivatives are synthesized from GBL.

  • CAS: No. 96-48-0 (T)
  • EINECS: No. 202-509-5
  • Japan Chemical Substances Control Law: METI-No. 5-3337
  • Japan, Industrial Safety and Health Law: No. 5-3337
  • Japan, Poisonous and Deleterious Substances Control Law: Not applicable.
  • Japan, Fire Services Law: Hazardous material Class 4 Petroleums No.3 (water-soluble liquid).Aprotic, polar solvent.

2P

2P (2-Pyrrolidone) is a widely-used solvent with outstanding characteristics. It is miscible with almost all other organic solvents and has a high boiling point.

  • CAS: No. 616-45-5 (T)
  • EINECS: No. 210-483-1
  • Japan, Chemical Substances Control Law: METI-No. 5-112
  • Japan, Industrial Safety and Health Law: No. 5-112
  • Japan, Poisonous and Deleterious Substances Control Law: Not applicable.
  • Japan, Fire Services Law: Hazardous material Class 4 Petroleums No.3 (water-soluble liquid).

12BG

12BG (1,2-butanediol) is a glycol with hydroxyl groups on the first and second carbon of the 4-carbon chain. It can react with a dicarboxylic acid (for example phthalic acid or adipic acid), for use as a polyester polyol or a plasticizer. Moreover, it is also possible to make it react with an unsaturated dicarboxylic acid (for example, maleic anhydride) for use as an unsaturated polyester resin raw material.

  • CAS: No. 584-03-2 (T)
  • EINECS: No. 209-527-2
  • Japan, Chemical Substances Control Law: METI-No. 2-235
  • Japan, Industrial Safety and Health Law: No. 2-235
  • Japan, Poisonous and Deleterious Substances Control Law: Not applicable.
  • Japan, Fire Services Law: Hazardous material Class 4 Petroleums No.3 (water-soluble liquid).

14BG

14BG (1,4-Butanediol) is a straight chain glycol with hydroxyl groups on both ends. It is used as a raw material for high performance polyester and polyurethane resins as well as for industrial chemicals like tetrahydrofuran and gamma-butyrolactone. Since 1982, Mitsubishi Chemical's Yokkaichi plant has produced high-purity, high-quality 14BG from butadiene using our proprietary technology.

  • CAS: No. 110-63-4 (T)
  • EINECS: No. 203-786-5
  • Japan, Chemical Substances Control Law: METI-No. 2-235
  • Japan, Industrial Safety and Health Law: No. 2-235
  • Japan, Poisonous and Deleterious Substances Control Law: Not applicable.
  • Japan, Fire Services Law: Hazardous material Class 4 Petroleums No.3 (water-soluble liquid).