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Diethyl squarate

Product Name
Diethyl squarate
CAS No.
5231-87-8
Chemical Name
Diethyl squarate
Synonyms
DIETHYL SQUARATE;3,4-DiethoxycycL;DIETHYL SUQUARATE;DiethylSquarate98%;Diethyl quadratate;TIMTEC-BB SBB008498;obut-3-ene-1,2-dione;DIETHOXYCYCLOBUTENEDIONE;SQUARIC ACID DIETHYL ESTER;SUQUARIC ACID DIETHYL ESTER
CBNumber
CB1106356
Molecular Formula
C8H10O4
Formula Weight
170.16
MOL File
5231-87-8.mol
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Diethyl squarate Property

Melting point:
13-18 °C
Boiling point:
95 °C0.1 mm Hg(lit.)
Density 
1.15 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.509(lit.)
Flash point:
>230 °F
storage temp. 
2-8°C
form 
Liquid
color 
Clear yellow to light brownish
Water Solubility 
insoluble
BRN 
640626
InChIKey
DFSFLZCLKYZYRD-UHFFFAOYSA-N
CAS DataBase Reference
5231-87-8(CAS DataBase Reference)
NIST Chemistry Reference
3,4-Diethoxy-3-cyclobutene-1,2-dione(5231-87-8)
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Safety

Hazard Codes 
Xn,Xi
Risk Statements 
36/37/38-42/43
Safety Statements 
7-26-37/39-24-23
WGK Germany 
3
RTECS 
GU1772466
10
Hazard Note 
Irritant
HS Code 
29145090
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H315Causes skin irritation

H317May cause an allergic skin reaction

H319Causes serious eye irritation

H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

H335May cause respiratory irritation

Precautionary statements

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
310778
Product name
3,4-Diethoxy-3-cyclobutene-1,2-dione
Purity
98%
Packaging
5g
Price
$132
Updated
2024/03/01
TCI Chemical
Product number
D3253
Product name
3,4-Diethoxy-3-cyclobutene-1,2-dione
Purity
>98.0%(GC)
Packaging
5g
Price
$67
Updated
2024/03/01
TCI Chemical
Product number
D3253
Product name
3,4-Diethoxy-3-cyclobutene-1,2-dione
Purity
>98.0%(GC)
Packaging
25g
Price
$269
Updated
2024/03/01
Alfa Aesar
Product number
A19248
Product name
3,4-Diethoxy-3-cyclobutene-1,2-dione, 98%
Packaging
1g
Price
$50.65
Updated
2024/03/01
Alfa Aesar
Product number
A19248
Product name
3,4-Diethoxy-3-cyclobutene-1,2-dione, 98%
Packaging
5g
Price
$160.65
Updated
2024/03/01
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Diethyl squarate Chemical Properties,Usage,Production

Chemical Properties

clear yellow to light brownish liquid

Uses

3,4-Dethoxy-3-cyclobutene-1,2-dione is used as a starting material for synthesis of furanones and quinones. It undergoes ethoxy substitution with amines and unsaturated organosilanes.

Uses

Diethyl squarate is an intermediate for pharma products, for photochemicals used in the dry-view process, in synthesis of photosensitive squaraine dyes (eg. laser dyes used in CD-Rom) and as intermediate for functional polymers.

General Description

The reaction of 3,4-diethoxy-3-cyclobutene-1,2-dione (squaric acid diethyl ester) with glycosylamines (formed by reducing oligosaccharides) was studied. The derivatives formed were linked to amino-functionalized lipids, solids or proteins.

Diethyl squarate Preparation Products And Raw materials

Raw materials

Preparation Products

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Diethyl squarate Suppliers

Shanghai Boyle Chemical Co., Ltd.
Tel
Fax
86-21-57758967
Email
sales@boylechem.com
Country
China
ProdList
2922
Advantage
55
J & K SCIENTIFIC LTD.
Tel
010-82848833 400-666-7788
Fax
86-10-82849933
Email
jkinfo@jkchemical.com
Country
China
ProdList
94657
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
021-61259108 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40228
Advantage
62
INTATRADE GmbH
Tel
+49 3493/605464
Fax
+49 3493/605470
Email
sales@intatrade.de
Country
Germany
ProdList
3572
Advantage
66
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30123
Advantage
84
Chemexcel (Zhangjiakou) Fine Chemicals Co., Ltd
Tel
86-10-62944695-809
Fax
86-10-82415873
Email
sales@chemexcel.com.cn
Country
China
ProdList
80
Advantage
62
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24529
Advantage
81
ShangHai DEMO Chemical Co.,Ltd
Tel
400-021-7337 2355568890
Fax
0086-21-50182339
Email
sales@demochem.com
Country
China
ProdList
2572
Advantage
57
Ark Pharm, Inc.
Tel
847-367-3680
Fax
847-367-3681
Email
sales@arkpharminc.com
Country
United States
ProdList
1670
Advantage
56
Energy Chemical
Tel
021-021-58432009 400-005-6266
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
44689
Advantage
61
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View Lastest Price from Diethyl squarate manufacturers

Hebei Weibang Biotechnology Co., Ltd
Product
Diethyl squarate 5231-87-8
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500000kg
Release date
2024-10-29
Henan Aochuang Chemical Co.,Ltd.
Product
Diethyl squarate 5231-87-8
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
98%
Supply Ability
1ton
Release date
2022-09-19
Zhuozhou Wenxi import and Export Co., Ltd
Product
Diethyl squarate 5231-87-8
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-08-11

5231-87-8, Diethyl squarateRelated Search:


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  • TIANFU-CHEM CAS:5231-87-8 Diethyl squarate
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  • C2H5O2C4O2
  • Simple 4-Membered Ring Compounds
  • C7 to C8
  • Carbonyl Compounds
  • Building Blocks
  • Cyclobutanes & Cyclobutenes
  • Organic Building Blocks
  • Ketones
  • Cyclobutanes & Cyclobutenes
  • Simple 4-Membered Ring Compounds
  • Ring Systems
  • Aluminium foil bag/Fluoride bottle or on your request