Bis(tetrabutylammonium) dichromate
Bis(tetrabutylammonium) dichromate (CAS: 56660-19-6), with the formula [(CH3CH2CH2CH2)4N]2Cr2O7 and a molecular weight of 700.92 g/mol, is a versatile chemical reagent. It serves as an effective oxidizing agent in organic synthesis, facilitating reactions such as the preparation of nitrophenol derivatives and quinones under aprotic conditions, and the conversion of oximes to carbonyl compounds, particularly under microwave irradiation. It also acts as a catalyst precursor and crosslinking agent.
- IUPAC
- TBADC,Tetrabutylammonium dichromate
- Synonyms
- Tetrabutylammonium dichromateTBADC
![Bis(tetrabutylammonium) dichromate ([(CH3CH2CH2CH2)4N]2Cr2O7) — chemical structure, CAS 56660-19-6; Chemistry, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F56660-19-6.png&w=3840&q=75)
Synthesis of Organic Intermediates
This reagent is employed in the preparation of nitrophenol derivatives and quinones. It enables the conversion of oximes into carbonyl compounds, often enhanced by microwave irradiation for efficiency.
Catalysis
Bis(tetrabutylammonium) dichromate functions as a catalyst precursor. It is utilised in the catalytic gas-phase dehydration of acetic acid to produce ketene.
Crosslinking Agent
The compound finds application as a crosslinking agent in various material science and polymer chemistry processes, contributing to the modification of material properties.
| Molecular weight | 700.92 |
|---|---|
| Linear formula | [(CH3CH2CH2CH2)4N]2Cr2O7 |
| Assay | 99% |
| Grade | purum |
| Application | Reagent for:• Preparation of nitrophenol derivatives and quinones under aprotic reaction conditions1• Conversion of oximes to carbonyl compounds under microwave irradiation2• Catalyst precursor for catalytic gas phase dehydration of acetic acid to ketene3• Crosslinking agent4 |
| Melting point | 139-143 °C(lit.) |



Hazard statements
- H272May intensify fire; oxidiser
- H317May cause an allergic skin reaction
- H400Very toxic to aquatic life
Precautionary statements
- P220Keep away from clothing and combustible materials
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 1479 5.1 / PGII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | O,T,N |
| Risk statements (R) | 49-8-43-50/53 |
| Safety statements (S) | 53-45-60-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
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 Bis(tetrabutylammonium) dichromate used for?
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Bis(tetrabutylammonium) dichromate is primarily used as a reagent in organic synthesis for preparing nitrophenol derivatives and quinones, converting oximes to carbonyl compounds, as a catalyst precursor for ketene production, and as a crosslinking agent.
What is the CAS number and chemical formula for Bis(tetrabutylammonium) dichromate?
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The CAS number is 56660-19-6, and the chemical formula is [(CH3CH2CH2CH2)4N]2Cr2O7.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Bis(tetrabutylammonium) dichromate with a purity of 99% and a grade of 'purum'. TSS does not represent this product as USP, BP, or EP grade.
What are the safety considerations for handling Bis(tetrabutylammonium) dichromate?
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This compound is an oxidiser (H272) and can cause an allergic skin reaction (H317), and is very toxic to aquatic life with long-lasting effects (H400). Appropriate personal protective equipment, including eyeshields, faceshields, gloves, and respiratory protection, must be used. Handle in a well-ventilated area, avoid release to the environment, and keep away from heat sources.
How is Bis(tetrabutylammonium) dichromate packed and shipped?
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Bis(tetrabutylammonium) dichromate is packed and shipped according to UN 1479 classification for transport, with a 5.1 hazard class and II packing group. TSS exports globally, adhering to all relevant shipping regulations.
How can I request a sample or quote?
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To request a sample or a quote for Bis(tetrabutylammonium) dichromate, please contact our sales team through the website or by phone. Please specify your required quantity and delivery location.
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