Molekula
3,4-Dibutoxy-3-cyclobutene-1,2-dione
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
3,4-Dibutoxy-3-cyclobutene-1,2-dione, also known as dibutyl squarate, is a dibutyl ester of squaric acid used in synthetic organic chemistry as a reagent for preparing squaramides and squaraine dyes through substitution of its butoxy groups with amines and other nucleophiles. It is also a contact sensitizer with documented roles as an allergen and immunological adjuvant, for example in topical immunotherapy for alopecia areata and warts. This chemical has a CAS number of 2892-62-8, with a molecular formula of C12H18O4 and a molecular weight of 226.27 g/mol. It is stored at ambient conditions and carries a signal word of "Warning" due to moderate hazard risks. Molekula supplies 3,4-Dibutoxy-3-cyclobutene-1,2-dione from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
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Pricing & pack sizes
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5 g — $58.70 per pack
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25 g — $218.20 per pack
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Specifications
| Property | Value |
|---|---|
| Water | <0.4% |
| Assay GC | >99% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 113 °C |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 20790007 |
| CAS Number | 2892-62-8 |
| IUPAC Name | 3,4-dibutoxycyclobut-3-ene-1,2-dione |
| Molecular Formula | C12H18O4 |
| Molecular Weight | 226.27 |
| Exact Mass | 226.1205 |
| SMILES | CCCCOC1=C(C(=O)C1=O)OCCCC |
| InChIKey | XBRWELTXMQSEIN-UHFFFAOYSA-N |
| InChI | InChI=1S/C12H18O4/c1-3-5-7-15-11-9(13)10(14)12(11)16-8-6-4-2/h3-8H2,1-2H3 |
| PubChem CID | 65108 |
| REACH Code | Y110 |
| HTS Code | 2914.50.50.00 |
| Tariff Code | 2914500090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 1,2-dibutoxy-1-cyclobutene-3,4-dione
- 1,2-dibutyl squarate
- 3-Cyclobutene-1,2-dione, 3,4-dibutoxy-
- 3,4-di-n-Butoxy-3-cyclobutene-1,2-dione
- 3,4-dibutoxycyclobut-3-ene-1,2-dione
- Dibutyl squarate
- DIBUTYL SQUARATE, REFERENCE STANDARD
- Epitope ID:115137
- SADBE
- Squaric acid dibutyl ester
Frequently asked questions
What is 3,4-Dibutoxy-3-cyclobutene-1,2-dione (CAS 2892-62-8) commonly used for?
This compound is primarily used as a synthetic intermediate in organic synthesis, particularly in the preparation of photochromic and fluorescent dyes, as well as in polymer chemistry for specialty applications.
What is the molecular formula and molecular weight of this product?
The molecular formula is C₁₂H₁₈O₄, and the molecular weight is 226.27 g/mol.
What is the recommended storage condition for this chemical?
Store at ambient temperature in a cool, dry place, away from direct sunlight and incompatible materials. Ensure the container is tightly sealed.
What purity grades or specifications are available for this product?
Molekula supplies this compound in high-purity research grade (≥98%) for laboratory and small-scale applications. Bulk or custom specifications may be available upon request.
Can Molekula supply this product in bulk quantities?
Yes, we can provide bulk quantities of 3,4-Dibutoxy-3-cyclobutene-1,2-dione upon inquiry, subject to availability and minimum order quantities.
What documentation is provided with each order of this chemical?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a product specification sheet detailing purity, batch-specific data, and handling instructions.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.