Squaric acid
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- $5 - $2178
- Product name: Squaric acid
- CAS: 2892-51-5
- MF: C4H2O4
- MW: 114.06
- EINECS:220-761-4
- MDL Number:MFCD00001334
- Synonyms:4-dihydroxy-3-cyclobutene-1;3,4-Dihydroxy-3-cyclobuten-1,2-dion;3,4-Dihydroxy-3-cyclobutene-1,2-dione, 99% 25GR;3,4-Dihydroxy-3-cyclobutene-1,2-dione, 99% 5GR;dihydroxy-cyclobutenedion ;dihydroxycyclobutenedione ;3,4-DIHYDROXY-3-CYCLOBUTEN-1,2-DIONE;1-Cyclobutene-3,4-dione-1,2-diol Squaric Acid
70 prices
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Brand
- aablocks
- ACHEMBLOCK
- AHH
- AK Scientific
- Ambeed
- Apolloscientific
- Arctom
- Atlantic Research Chemicals
- Biosynth
- Chemenu
- Crysdot
- Frontier Specialty Chemicals
- Matrix Scientific
- Sigma-Aldrich
- TCI Chemical
- Thermo Scientific Chemicals
- TRC
Package
- 50mg
- 100mg
- 500mg
- 1g
- 5g
- 10g
- 25g
- 50g
- 100.00g
- 100g
- 250G
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- 500.00g
- 1000.00g
- 1000g
- 1kg
- 5 g
- 10gm:
- 50gm:
- 100 g
- Manufactureraablocks
- Product numberAA002X0G
- Product descriptionSquaric acid 98%
- Packaging1g
- Price$5
- Updated2026-05-28
- Buy
- Manufactureraablocks
- Product numberAA002X0G
- Product descriptionSquaric acid 98%
- Packaging5g
- Price$8
- Updated2026-05-28
- Buy
- Manufactureraablocks
- Product numberAA002X0G
- Product descriptionSquaric acid 98%
- Packaging10g
- Price$13
- Updated2026-05-28
- Buy
- Manufactureraablocks
- Product numberAA002X0G
- Product descriptionSquaric acid 98%
- Packaging25g
- Price$17
- Updated2026-05-28
- Buy
- Manufactureraablocks
- Product numberAA002X0G
- Product descriptionSquaric acid 98%
- Packaging50g
- Price$33
- Updated2026-05-28
- Buy
- Manufactureraablocks
- Product numberAA002X0G
- Product descriptionSquaric acid 98%
- Packaging100g
- Price$64
- Updated2026-05-28
- Buy
- ManufacturerACHEMBLOCK
- Product numberP45810
- Product descriptiondihydroxycyclobut-3-ene-1,2-dione 97%
- Packaging250G
- Price$365
- Updated2026-05-27
- Buy
- ManufacturerAHH
- Product numberMT-22381
- Product descriptionSquaricacid 99%
- Packaging1000g
- Price$2178
- Updated2021-12-16
- Buy
- ManufacturerAHH
- Product numberMT-22381
- Product descriptionSquaric acid 97%
- Packaging1000g
- Price$2178
- Updated2026-05-25
- Buy
- ManufacturerAHH
- Product numberMT-22381
- Product descriptionSquaric acid 97%
- Packaging1000g
- Price$2178
- Updated2026-05-26
- Buy
- ManufacturerAK Scientific
- Product numberJ92478
- Product description3,4-Dihydroxy-3-cyclobutene-1,2-dione 95%
- Packaging500g
- Price$520
- Updated2026-06-04
- Buy
- ManufacturerAK Scientific
- Product numberJ92478
- Product description3,4-Dihydroxy-3-cyclobutene-1,2-dione
- Packaging500g
- Price$560
- Updated2021-12-16
- Buy
- ManufacturerAK Scientific
- Product numberF324
- Product description3,4-Dihydroxy-3-cyclobutene-1,2-dione 98%(HPLC)
- Packaging500g
- Price$713
- Updated2026-06-04
- Buy
- ManufacturerAK Scientific
- Product numberJ92478
- Product description3,4-Dihydroxy-3-cyclobutene-1,2-dione 95%
- Packaging100g
- Price$120
- Updated2026-06-04
- Buy
- ManufacturerAK Scientific
- Product numberF324
- Product description3,4-Dihydroxy-3-cyclobutene-1,2-dione 98%(HPLC)
- Packaging100g
- Price$165
- Updated2026-06-04
- Buy
- ManufacturerAK Scientific
- Product numberJ92478
- Product description3,4-Dihydroxy-3-cyclobutene-1,2-dione 95%
- Packaging25g
- Price$41
- Updated2026-06-04
- Buy
| Manufacturer | Product number | Product description | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|
| aablocks | AA002X0G | Squaric acid 98% | 1g | $5 | 2026-05-28 | Buy |
| aablocks | AA002X0G | Squaric acid 98% | 5g | $8 | 2026-05-28 | Buy |
| aablocks | AA002X0G | Squaric acid 98% | 10g | $13 | 2026-05-28 | Buy |
| aablocks | AA002X0G | Squaric acid 98% | 25g | $17 | 2026-05-28 | Buy |
| aablocks | AA002X0G | Squaric acid 98% | 50g | $33 | 2026-05-28 | Buy |
| aablocks | AA002X0G | Squaric acid 98% | 100g | $64 | 2026-05-28 | Buy |
| ACHEMBLOCK | P45810 | dihydroxycyclobut-3-ene-1,2-dione 97% | 250G | $365 | 2026-05-27 | Buy |
| AHH | MT-22381 | Squaricacid 99% | 1000g | $2178 | 2021-12-16 | Buy |
| AHH | MT-22381 | Squaric acid 97% | 1000g | $2178 | 2026-05-25 | Buy |
| AHH | MT-22381 | Squaric acid 97% | 1000g | $2178 | 2026-05-26 | Buy |
| AK Scientific | J92478 | 3,4-Dihydroxy-3-cyclobutene-1,2-dione 95% | 500g | $520 | 2026-06-04 | Buy |
| AK Scientific | J92478 | 3,4-Dihydroxy-3-cyclobutene-1,2-dione | 500g | $560 | 2021-12-16 | Buy |
| AK Scientific | F324 | 3,4-Dihydroxy-3-cyclobutene-1,2-dione 98%(HPLC) | 500g | $713 | 2026-06-04 | Buy |
| AK Scientific | J92478 | 3,4-Dihydroxy-3-cyclobutene-1,2-dione 95% | 100g | $120 | 2026-06-04 | Buy |
| AK Scientific | F324 | 3,4-Dihydroxy-3-cyclobutene-1,2-dione 98%(HPLC) | 100g | $165 | 2026-06-04 | Buy |
| AK Scientific | J92478 | 3,4-Dihydroxy-3-cyclobutene-1,2-dione 95% | 25g | $41 | 2026-06-04 | Buy |
Properties
Melting point :>300 °C(lit.)
Boiling point :250.96°C
Density :1.82 g/cm3
refractive index :1.5800 (estimate)
Flash point :190 °C
storage temp. :Inert atmosphere,Room Temperature
solubility :20g/l
form :Crystalline Powder
pka :1.5(at 25℃)
color :White to beige
PH :1 (1g/l, H2O, 20℃)
Water Solubility :20 g/L (30 ºC)
Merck :14,8769
BRN :774275
InChI :1S/C4H2O4/c5-1-2(6)4(8)3(1)7/h5-6H
InChIKey :PWEBUXCTKOWPCW-UHFFFAOYSA-N
SMILES :OC1=C(O)C(=O)C1=O
CAS DataBase Reference :2892-51-5(CAS DataBase Reference)
NIST Chemistry Reference :3-Cyclobutene-1,2-dione, 3,4-dihydroxy-(2892-51-5)
EPA Substance Registry System :3-Cyclobutene-1,2-dione, 3,4-dihydroxy- (2892-51-5)
Boiling point :250.96°C
Density :1.82 g/cm3
refractive index :1.5800 (estimate)
Flash point :190 °C
storage temp. :Inert atmosphere,Room Temperature
solubility :20g/l
form :Crystalline Powder
pka :1.5(at 25℃)
color :White to beige
PH :1 (1g/l, H2O, 20℃)
Water Solubility :20 g/L (30 ºC)
Merck :14,8769
BRN :774275
InChI :1S/C4H2O4/c5-1-2(6)4(8)3(1)7/h5-6H
InChIKey :PWEBUXCTKOWPCW-UHFFFAOYSA-N
SMILES :OC1=C(O)C(=O)C1=O
CAS DataBase Reference :2892-51-5(CAS DataBase Reference)
NIST Chemistry Reference :3-Cyclobutene-1,2-dione, 3,4-dihydroxy-(2892-51-5)
EPA Substance Registry System :3-Cyclobutene-1,2-dione, 3,4-dihydroxy- (2892-51-5)
Safety Information
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| Signal word: | Danger | ||||||||||||||
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Description
3,4-Dihydroxy-3-cyclobutene-1,2-dione is used to produce diethoxy-cyclobutenedione by heating, pharmaceutical intermediates, squarylium dyes, and photoconducting squaraines; The dibutylester is used as a contact sensitizer in the treatment of alopecia and warts.More related product prices
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Suppliers and manufacturers
SHANDONG OUCHEM CO.,LTD.
3,4-DIHYDROXY-3-CYCLOBUTEN-1,2-DIONE
CAS:2892-51-5
Shaanxi Haibo Biotechnology Co., Ltd
Springchem New Material Technology Co.,Limited
Capot Chemical Co.,Ltd.
Henan Tianfu Chemical Co.,Ltd.
Shanghai Time Chemicals CO., Ltd.
ATK CHEMICAL COMPANY LIMITED
Squaric acid
CAS:2892-51-5
