4-Tetrahydropyran-2-yloxy-1-butyne
[CAS# 40365-61-5]

Identification

• Classification: Pharmaceutical intermediate >> Heterocyclic compound intermediate >> Pyran compound
• Name: 4-Tetrahydropyran-2-yloxy-1-butyne
• Synonyms: 3-Butynyl tetrahydro-2H-pyran-2-yl ether; 4-Tetrahydropyran-2-yloxy-1-butyne; NSC 254948; Tetrahydro-2-(3-butynyloxy)-2H-pyran
• Molecular Formula: C₉H₁₄O₂
• Molecular Weight: 154.21
• CAS Registry Number: 40365-61-5
• EC Number: 628-704-9

Properties

• Solubility: Slightly soluble (6.6 g/L) (25 ºC), Calc.^*
• Density: 0.98±0.1 g/cm³ (20 ºC 760 Torr), Calc.^*
• Boiling point: 160-170 ºC (30 Torr)^**
• Refractive index: 1.4589 (589.3 nm 18 ºC)^***
• Flash point: 72.8±0.0 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2017 ACD/Labs)

^** Sargent, Melvyn V.; Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) 1990, (5), P1429-34.

^*** Jones, E. R. H.; Journal of the Chemical Society 1950, P230-6.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute toxicity	Acute Tox.	4	H332
Skin irritation	Skin Irrit.	2	H315
Acute toxicity	Acute Tox.	4	H302
Acute toxicity	Acute Tox.	4	H312
Specific target organ toxicity - single exposure	STOT SE	3	H335
Eye irritation	Eye Irrit.	2	H319