- Shanghai Nianxing Industrial Co., Ltd
- China
- Product Name: Diethyl squarate
- Price: Check
- Purity: 98.0%
- Stocking Period: 10 Day
- Contact: Yang
- Email: sales@echemcloud.com
- Shanghai Jizhi Biochemical Technology Co., Ltd
- China
- Product Name: Diethyl squarate
- Price: ￥358.0/5g ￥1148.0/25g
- Purity: 98.0%
- Stocking Period: 2 Day
- Contact: Liu jia
- Email: 2130147988@qq.com
- Dayang Chem (Hangzhou) Co., Ltd.
- China
- Product Name: Diethyl squarate
- Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
- Purity: 98.0%
- Stocking Period: Inquiry
- Contact: Ms Wang
- Email: enquiry@dycnchem.com
5231-87-8
5231-87-8 structure
- Name: Diethyl squarate
- Chemical Name: 3,4-Diethoxy-3-cyclobutene-1,2-dione
- CAS Number: 5231-87-8
- Molecular Formula: C8H10O4
- Molecular Weight: 170.163
- Catalog: Chemical reagent Organic reagent Olefins (cyclic and non-cyclic)
- Create Date: 2018-06-03 08:00:00
- Modify Date: 2025-08-25 23:50:52
| Name | 3,4-Diethoxy-3-cyclobutene-1,2-dione |
|---|---|
| Synonyms |
Diethyl squarate
3,4-diethoxycyclobut-3-ene-1,2-dione MFCD00001333 3,4-Diethoxy-3-cyclobutene-1,2-dione Squaric Acid Diethyl Ester 3-Cyclobutene-1,2-dione, 3,4-diethoxy- |
| Density | 1.2±0.1 g/cm3 |
|---|---|
| Boiling Point | 325.7±0.0 °C at 760 mmHg |
| Melting Point | 19 °C |
| Molecular Formula | C8H10O4 |
| Molecular Weight | 170.163 |
| Flash Point | 135.4±30.7 °C |
| Exact Mass | 170.057907 |
| PSA | 52.60000 |
| LogP | -0.15 |
| Vapour Pressure | 0.0±0.7 mmHg at 25°C |
| Index of Refraction | 1.477 |
| Storage condition | 2-8°C |
| Water Solubility | insoluble |
| Symbol |
GHS07, GHS08 |
|---|---|
| Signal Word | Danger |
| Hazard Statements | H315-H317-H319-H334-H335 |
| Precautionary Statements | P261-P280-P284-P304 + P340-P305 + P351 + P338-P342 + P311 |
| Personal Protective Equipment | Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter |
| Hazard Codes | Xn:Harmful; |
| Risk Phrases | R36/37/38;R42/43 |
| Safety Phrases | S7-S26-S37/39-S24-S23 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | 3 |
| RTECS | GU1772466 |
|
~86%
5231-87-8 |
| Literature: Ohno, Masatomi; Yamamoto, Yoshihiko; Shirasaki, Yuhichi; Eguchi, Shoji Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1993 , # 2 p. 263 - 272 |
|
~83%
5231-87-8 |
| Literature: Busschaert, Nathalie; Kirby, Isabelle L.; Young, Sarah; Coles, Simon J.; Horton, Peter N.; Light, Mark E.; Gale, Philip A. Angewandte Chemie - International Edition, 2012 , vol. 51, # 18 p. 4426 - 4430 |
|
~91%
5231-87-8 |
| Literature: Liu, Hiu; Tomooka, Craig S.; Moore, Harold W. Synthetic Communications, 1997 , vol. 27, # 12 p. 2177 - 2180 |
|
~%
5231-87-8 |
| Literature: Fu, Nanyan; Allen, Annette D.; Kobayashi, Shinjiro; Tidwell, Thomas T.; Vukovic, Sinisa; Matsuoka, Takeshi; Mishima, Masaaki Journal of Organic Chemistry, 2008 , vol. 73, # 5 p. 1768 - 1773 |
|
~28%
5231-87-8 |
| Literature: Dehmlow, Eckehard V.; Schell, Hans G. Chemische Berichte, 1980 , vol. 113, # 1 p. 1 - 8 |
| Precursor 4 | |
|---|---|
| DownStream 9 | |
![(4Z)-3-oxo-4-[(1,3,3-trimethylindol-1-ium-2-yl)methylidene]-2-[(E)-(1,3,3-trimethylindol-2-ylidene)methyl]cyclobuten-1-olate structure](https://image.chemsrc.com/caspic/366/14238-53-0.png)
