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acetylacetone

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начало: Китай

Кас Но: 123-54-6

Спецификация: 99%наименьший

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CAS No.: 123-54-6 Formula: C5H8O2 Molecular Weight: 100.11600

Description

Acetylacetone is an organic compound that exists in two tautomeric forms that interconvert rapidly and are treated as a single compound in most applications. Although the compound is formally named as the diketone form, pentane-2,4-dione, the enol form forms a substantial component of the material and is actually the favored form in many solvents. It is a colourless liquid that is a precursor to acetylacetonate (acac), a common bidentate ligand. It is also a building block for the synthesis of heterocyclic compounds.

Basic Info

Chemical Name	acetylacetone
Synonyms	Diacetylmethane; Axetacetone; Acetylaeetone; ACAC; 2,4-Pentanedione; Acetoacetone; Acetylacetone; FEMA 2841; Pentane-2,4-dione; MeC(O)CH2C(O)Me; 2,4-pentandione; pentan-2,4-dione; acetyl; acetyl-aceton; CH3COCH2COCH3; Pentanedione; Acetylactone;
CAS No.	123-54-6
Molecular Formula	C5H8O2
Molecular Weight	100.11600
PSA	34.14000
LogP	0.55450

Properties

Appearance & Physical State	colorless or yellow colored liquid
Density	0.975
Boiling Point	133-140ºC
Melting Point	-23ºC
Flash Point	35.5ºC
Refractive Index	1.451-1.453
Water Solubility	16 g/100 mL (20 ºC)
Stability	Stable under normal temperatures and pressures.
Storage Condition	2-8ºC
Vapor Density	3.5 (vs air)
Vapor Pressure	6 mm Hg ( 20 °C)

Safety Info

RTECS	SA1925000
Hazard Class	3
Safety Statements	S21-S23-S24/25
HS Code	2914190090
Packing Group	III
WGK Germany	1
RIDADR	UN 2310
Risk Statements	R10; R22
Hazard Codes	Xn
Signal Word	Danger
Caution Statement	P261; P280; P311
Hazard Declaration	H226; H302; H311; H331
Symbol	GHS02, GHS06

Synthesis Route

3-acetylpentane-2,4-dione→1-(3,5-dimethyl-1H-pyrazol-4-yl)ethanone+acetohydrazide
2-acetyl-5,5,6,6,6-pentafluorohexane-2,4-dione→5,5,6,6,6-Pentafluorohexane-2,4-dione+acetylacetone
2-acetyl-5,5,6,6,7,7,8,8,8-nonafluorooctane-2,4-dione→1,1,1,2,2,3,3,4,4-Nonafluoro-5,7-octanedione+acetylacetone

GC Analysis

Column type	Active phase	Temperature (°C)	Retention Index (I)	Temperature Control Method
Capillary	DB-5	130.	786.6	isothermal
Capillary	DB-5	150.	787.25	isothermal
Capillary	DB-5	170.	763.43	isothermal
Capillary	DB-5	190.	791.	isothermal
Packed	SE-30	150.	775.	isothermal

Precursor

acetone
1-(3-methyloxiran-2-yl)ethanone
acetylene
ethyl acetate

Downstream Product

3-n-hexyl-2,4-pentanedione
3-(3,5-dimethylpyrazol-1-yl)-4-ethyl-1λ<sup>6</sup>,2,4-benzothiadiazine 1,1-dioxide
(Z)-4-(hexyloxy)pent-3-en-2-one
3,3-dihexylpentane-2,4-dione

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