1,4-Butanediol-terephthaloyl chloride cyclic dimer
[CAS# 63440-93-7]

Identification

• Name: 1,4-Butanediol-terephthaloyl chloride cyclic dimer
• Synonyms: Pharacin; Pharacine; X-Guard VCA 1; 3,8,15,20-Tetraoxatricyclo[20.2.2.2(10,13)]octacosa-10,12,22,24,25,27-hexaene-2,9,14,21-tetrone
• Molecular Formula: C₂₄H₂₄O₈
• Molecular Weight: 440.44
• CAS Registry Number: 63440-93-7
• EC Number: 854-568-7

Properties

• Solubility: Insoluble (9.7E^-3 g/L) (25 ºC), Calc.^*
• Density: 1.208±0.06 g/cm³ (20 ºC 760 Torr), Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2018 ACD/Labs)

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin irritation	Skin Irrit.	2	H315
Acute toxicity	Acute Tox.	4	H302
Eye irritation	Eye Irrit.	2A	H319
Specific target organ toxicity - single exposure	STOT SE	3	H335