1,3-Bis[4-(dimethylamino)-2-hydroxyphenyl]-2,4-dihydroxycyclobutenediylium dihydroxide, bis(inner salt)
1,3-Bis[4-(dimethylamino)-2-hydroxyphenyl]-2,4-dihydroxycyclobutenediylium dihydroxide, bis(inner salt) (CAS 63842-83-1) is an organic compound with a molecular weight of 352.38 g/mol. This chemical is recognised for its properties as an infrared dye and its utility in laser applications. It also finds applications in materials science, particularly in the development of organic and printed electronics, and in the field of photonic and optical materials.
- IUPAC
- OH-SQ
- Synonyms
- bis(inner salt)63842-83-1C20H20N2O4
![1,3-Bis[4-(dimethylamino)-2-hydroxyphenyl]-2,4-dihydroxycyclobutenediylium dihydroxide, bis(inner salt) (C20H20N2O4) — chemical structure, CAS 63842-83-1; Materials Science, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F63842-83-1.png&w=3840&q=75)
Infrared (IR) Dyes
This compound exhibits properties suitable for use as an infrared dye. Its specific absorption characteristics, with a lambda max at 638 nm, make it valuable for applications requiring IR absorption or emission.
Laser Dyes
The chemical structure and optical properties of this compound lend themselves to applications as a laser dye. Such dyes are crucial components in tunable laser systems.
Materials Science
It is utilised in materials science research, contributing to the development of advanced materials. This includes applications in organic and printed electronics due to its unique optoelectronic characteristics.
Photonic and Optical Materials
The compound is relevant in the synthesis and study of photonic and optical materials. Its properties are of interest for applications involving light manipulation and interaction.
| Molecular weight | 352.38 |
|---|---|
| Empirical formula | C20H20N2O4 |
| Melting point | >300 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Absorption | λmax 638 nm |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 1,3-Bis[4-(dimethylamino)-2-hydroxyphenyl]-2,4-dihydroxycyclobutenediylium dihydroxide, bis(inner salt) used for?
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This compound is used as an infrared dye, a laser dye, and in materials science, including organic and printed electronics, and photonic and optical materials.
What is the CAS number and formula for this chemical?
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The CAS number is 63842-83-1, and the empirical formula is C20H20N2O4.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this chemical for research and development purposes. The specific grade and purity are available upon request, and it is not represented as USP, BP, EP, or pharmacopoeia grade.
What are the safety considerations for handling this chemical?
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This compound is a Warning substance (GHS07) and may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask (type N95), eyeshields, and gloves, should be used. Handle in a well-ventilated area.
How is this product packed and shipped?
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This product is available for export globally. Packaging adheres to international shipping regulations for chemicals. Please contact us for specific details regarding your region.
How can I request a sample or quote?
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To request a sample or a quotation, please visit the product page on our website and use the 'Request Sample' or 'Request Quote' buttons, or contact our sales team directly.
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