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Alfa Aesar™ 3,4-Dihydroxy-3-cyclobutene-1,2-dione, 98+%

$71.76 - $71.76

Chemical Identifiers

Chemical Name or Material 3,4-Dihydroxy-3-cyclobutene-1,2-dione
CAS 2892-51-5
Molecular Formula C4H2O4
Formula Weight 114.06g/mol
MDL Number MFCD00001334
UN Number UN3261
Beilstein 774275
Synonym Squaric acid
View More Specs
Products
Catalog Number Mfr. No. Quantity Price Quantity    

AAA1516906

 
alfa aesar™
A15169-06
5g Each for $71.76

AAA1516903

 
alfa aesar™
A15169-03
1g CALL N/A N/A
 Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.

AAA1516914

 
alfa aesar™
A15169-14
25g CALL N/A N/A
 Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.

AAA1516922

 
alfa aesar™
A15169-22
100g CALL N/A N/A
 Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.
Description & Specifications

Specifications

Melting Point >300°C
Quantity 5g
Flash Point 190°C (374°F)
Chemical Name or Material 3,4-Dihydroxy-3-cyclobutene-1,2-dione
CAS 2892-51-5
Assay ≥98%
Molecular Formula C4H2O4
Formula Weight 114.06g/mol
MDL Number MFCD00001334
UN Number UN3261
Beilstein 774275
Synonym Squaric acid
Health Hazard 1 Danger
Health Hazard 2 GHS H Statement
H314-H318
Causes severe skin burns and eye damage.
Causes serious eye damage.
Health Hazard 3 GHS P Statement
P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501a
Do not breathe dust/fume/gas/mist/vapors/spray.
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.
DOT Information Transport Hazard Class: 8; Packing Group: II; Proper Shipping Name: CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.
RTECS Number GU1800000
TSCA TSCA

Applications
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.

Solubility
Soluble in water.

Notes
Keep container tightly closed. Store in cool, dry conditions in well sealed containers.

Safety and Handling

Danger

GHS P Statement
P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501a
Do not breathe dust/fume/gas/mist/vapors/spray.
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.

GHS H Statement
H314-H318
Causes severe skin burns and eye damage.
Causes serious eye damage.