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3,4-Diethoxy-3-cyclobutene-1,2-dione_Molecular_structure_CAS_5231-87-8)
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3,4-Diethoxy-3-cyclobutene-1,2-dione

Catalog No. 31630 Name Sigma Aldrich
CAS Number 5231-87-8 Website http://www.sigmaaldrich.com
M. F. C8H12O4 Telephone 1-800-521-8956
M. W. 172.17848 Fax
Purity ≥97.0% (GC) Email
Storage Chembase ID: 135715

SYNONYMS

Title
3,4-二乙氧基-3-环丁烯-1,2-二酮
IUPAC name
3,4-diethoxycyclobutane-1,2-dione
IUPAC Traditional name
3,4-diethoxycyclobutane-1,2-dione
Synonyms
四方酸二乙酯
Diethyl squarate
Squaric acid diethyl ester
方酸二乙酯

DATABASE IDS

PubChem SID 24859005
MDL Number MFCD00001333
CAS Number 5231-87-8
Beilstein Number 640626

PROPERTIES

Grade purum
Linear Formula (C2H5O)2C4(=O)2
Purity ≥97.0% (GC)
Boiling Point 95 °C/0.1 mmHg(lit.)
Density 1.15 g/mL at 25 °C(lit.)
Flash Point 110 °C
Flash Point 230 °F
Refractive Index n20/D 1.509(lit.)
Refractive Index n20/D 1.509
GHS Pictograms GHS07
GHS Signal Word Warning
GHS Hazard statements H315-H317-H319-H335
European Hazard Symbols Harmful Harmful (Xn)
MSDS Link Download
Personal Protective Equipment Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
GHS Precautionary statements P261-P280-P305 + P351 + P338
Risk Statements 36/37/38-42/43
Safety Statements 7-26-37/39
Storage Temperature 2-8°C
German water hazard class 3

DETAILS

Description (English)
Other Notes
Building block for the synthesis of substituted and fused p-benzoquinones and of cyclopentenediones1,2,3,4
Description (简体中文)
Other Notes
合成取代和稠合对苯醌和环戊烯二酮的结构单元1,2,3,4

REFERENCES