Molekula
4,4'-Bis(dimethylamino)benzophenone (Michler's ketone)
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
4,4'-Bis(dimethylamino)benzophenone, also known as Michler's ketone, is a fluorescent organic compound used as a photoinitiator in polymer chemistry and as a dye intermediate. It appears as a yellow crystalline solid with a molecular formula of C17H20N2O and a molecular weight of 268.35 g/mol. CAS number: 90-94-8. Store at ambient temperature. Signal word: Danger. Molekula supplies Michler's ketone from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
100 g — £30.90 per pack ex VAT · £37.08 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Grey blue powder |
| Melting Point | 168°C-176°C |
| Purity | 96.5-102.5% |
| Moisture | ≤0.5% |
| Insolubles | ≤2.5% |
| Identification (IR) | Conforms to Structure |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Leaf in alcohol, needles in benzene |
| Melting Point | 172 °C |
| Vapour Pressure | 0.00000107 mmHg |
Source: PubChem CID 7031 (HSDB, Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 38897058 |
| CAS Number | 90-94-8 |
| IUPAC Name | bis[4-(dimethylamino)phenyl]methanone |
| EC Number | 202-027-5 |
| Molecular Formula | C17H20N2O |
| Molecular Weight | 268.35 |
| Exact Mass | 268.1576 |
| SMILES | CN(C)C1=CC=C(C=C1)C(=O)C2=CC=C(C=C2)N(C)C |
| InChIKey | VVBLNCFGVYUYGU-UHFFFAOYSA-N |
| InChI | InChI=1S/C17H20N2O/c1-18(2)15-9-5-13(6-10-15)17(20)14-7-11-16(12-8-14)19(3)4/h5-12H,1-4H3 |
| PubChem CID | 7031 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29223900 |
| Tariff Code | 2922390090 |
Safety & GHS
-
Corrosive
GHS05
-
Serious Health Hazard
GHS08
Hazard statements
- H318 Causes serious eye damage
- H341 Suspected of causing genetic defects
- H350 May cause cancer
Precautionary statements
- P201 Obtain special instructions before use
- P263 Avoid contact during pregnancy/while nursing
- 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
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
- Benzophenone, 4,4'-bis(dimethylamino)-
- Bis(4-(dimethylamino)phenyl)methanone
- Methanone, bis[4-(dimethylamino)phenyl]-
- Michler ketone
- Michler's ketone
- N,N,N',N'-Tetramethyl-4,4'-diaminobenzophenone
- p,p'-Bis(dimethylamino)benzophenone
- p,p'-Bis(N,N-dimethylamino)benzophenone
- p,p'-Michler's ketone
- Tetramethyldiaminobenzophenone
Frequently asked questions
What is 4,4'-Bis(dimethylamino)benzophenone (Michler's ketone) commonly used for?
Michler's ketone is primarily used as a photoinitiator in UV-curable coatings, inks, and adhesives, and as a sensitizer in photopolymerization processes.
What is the chemical formula and molecular weight of Michler's ketone?
The chemical formula is **C17H20N2O**, and the molecular weight is **268.35 g/mol**.
How should Michler's ketone be stored?
Store at **ambient temperature** in a cool, dry place, away from direct sunlight and incompatible materials.
What grades or purities of Michler's ketone does Molekula supply?
Molekula supplies **technical-grade** and **high-purity** (98%+) Michler's ketone, depending on application requirements.
Can Molekula supply Michler's ketone in bulk quantities?
Yes, we offer bulk packaging options (e.g., 5 kg, 25 kg, and larger quantities) for industrial and commercial use.
What documentation is provided with an order of Michler's ketone?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability.
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.