1 4-Diiodobutane CAS 628-21-7

Product name:1 4-Diiodobutane
CAS:628-21-7
MF:C4H8I2
MW:309.92

EINECS: 211-032-1
Melting point: 6 °C
Boiling point: 147-152 °C
Density: 2.35 g/mL

Purity:≥99%

Colorless to pale yellow liquid

1. 1,4-Diiodobutane CAS 628-21-7 is a colorless to pale yellow liquid, also called tetramethylene iodide, and it is sold stabilized with copper as a bifunctional alkylating agent.
2. 1,4-Diiodobutane CAS 628-21-7 serves as a four-carbon linker for heterocycles, macrocycles, and other 1,4-difunctional compounds.
3. 1,4-Diiodobutane CAS 628-21-7 is employed as an additive in perovskite solar cells and as a crosslinking agent for cellulose anion-exchange membranes.
4. 1,4-Diiodobutane CAS 628-21-7 has the formula C4H8I2 and a molecular weight of 309.92; it melts at about 6°C, boils at about 147–152°C at 26 mmHg, and is insoluble in water.

1. 1,4-Diiodobutane CAS 628-21-7 should be stored in a cool, dark, well-ventilated place, with the original container kept tightly closed under an inert gas.
2. 1,4-Diiodobutane CAS 628-21-7 is light sensitive and air sensitive, and it should be kept away from strong oxidizing agents; TCI recommends a cool, dark place below 15°C, with copper present as a stabilizer.
3. 1,4-Diiodobutane CAS 628-21-7 should not be held for prolonged storage, and no single shelf life is stated on the safety data sheet, so the label should be followed.

1. 1,4-Diiodobutane CAS 628-21-7 causes skin irritation (H315).
2. 1,4-Diiodobutane CAS 628-21-7 causes serious eye irritation (H319).
3. 1,4-Diiodobutane CAS 628-21-7 is labeled with those two hazard statements on the TCI and other supplier sheets, with the signal word Warning.
4. 1,4-Diiodobutane CAS 628-21-7 has a catalog flash point of about 108–110°C, so it is handled as a combustible liquid, while the TCI safety data sheet reports no flash-point data.

1. 1,4-Diiodobutane CAS 628-21-7 is not safe for uncontrolled handling because it irritates the skin and eyes.
2. 1,4-Diiodobutane CAS 628-21-7 requires protective gloves and eye and face protection, and vapor should not be breathed.
3. 1,4-Diiodobutane CAS 628-21-7 is classified as a warning-level hazard (GHS07) with the signal word Warning.
4. 1,4-Diiodobutane CAS 628-21-7 should be kept away from ignition sources, and spills should be collected and disposed of as chemical waste.

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