Molekula
3,3'-Methylene-bis-[5-methyloxazolidine]
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
3,3'-Methylene-bis-[5-methyloxazolidine] (CAS 66204-44-2), also known as MBO, Grotan OX or Acticide OX, is a formaldehyde-releasing biocide used mainly as a preservative in metalworking fluids, fuels and industrial products, and as a hydrogen sulfide (H2S) scavenger. It also serves as a corrosion inhibitor and as a processing aid in petroleum production operations. It has the molecular formula C9H18N2O2 with a molecular weight of 186.25 g/mol. This chemical requires storage at -15 to -20°C and carries a Danger signal word due to its hazardous properties. Molekula supplies 3,3'-Methylene-bis-[5-methyloxazolidine] 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.
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1 g — $90.50 per pack
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5 g — $221.20 per pack
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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 | Orange to red liquid |
| Identification (IR) | Conforms to Reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | -15 to -20 °C |
| Flash Point | 73 °C |
| Transport Class | 8 |
| Packing Group | III |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 90033618 |
| CAS Number | 66204-44-2 |
| IUPAC Name | 5-methyl-3-[(5-methyl-1,3-oxazolidin-3-yl)methyl]-1,3-oxazolidine |
| EC Number | 266-235-8 |
| Molecular Formula | C9H18N2O2 |
| Molecular Weight | 186.25 |
| Exact Mass | 186.1368 |
| SMILES | CC1CN(CO1)CN2CC(OC2)C |
| InChIKey | BNKGKERDFRIJPU-UHFFFAOYSA-N |
| InChI | InChI=1S/C9H18N2O2/c1-8-3-10(6-12-8)5-11-4-9(2)13-7-11/h8-9H,3-7H2,1-2H3 |
| PubChem CID | 128328 |
| UN Number | UN2735 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29349990 |
| Tariff Code | 2934999090 |
Safety & GHS
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Corrosive
GHS05
-
Toxic
GHS06
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Serious Health Hazard
GHS08
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Hazardous to the Environment
GHS09
Hazard statements
- EUH071 Corrosive to the respiratory tract
- H302+332 Harmful if swallowed or inhaled
- H311 Toxic in contact with skin
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H317 May cause an allergic skin reaction
- H341 Suspected of causing genetic defects
- H350 May cause cancer
- H373 May cause damage to organs through prolonged or repeated exposure
- H411 Toxic to aquatic life with long lasting effects
Precautionary statements
- P201 Obtain special instructions before use
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
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
- 3,3'-Methylenebis(5-methyl-1,3-oxazolidine)
- 5-methyl-3-[(5-methyl-1,3-oxazolidin-3-yl)methyl]-1,3-oxazolidine
- 5-methyl-3-[(5-methyloxazolidin-3-yl)methyl]oxazolidine
- ACTICIDE OX
- BNKGKERDFRIJPU-UHFFFAOYSA-N
- Grotan OX
- methylenebis(5-methyloxazolidine)
- n,n-methylene-bis-5-methyl-oxazolidine
- Oxazolidine, 3,3'-methylenebis[5-methyl-
Frequently asked questions
What is 3,3'-Methylene-bis-[5-methyloxazolidine] (CAS 66204-44-2) commonly used for?
This compound is primarily used as a formaldehyde-releasing antimicrobial preservative (biocide), particularly in metalworking fluids, fuels and other industrial products, as well as a hydrogen sulfide (H2S) scavenger and a stabilizer in certain industrial applications.
What is the molecular formula and molecular weight of this product?
The molecular formula is C9H18N2O2, and the molecular weight is 186.25 g/mol.
How should this chemical be stored?
Store at -15 to -20°C in a cool, dry place, away from incompatible substances. Ensure proper containment to prevent leakage or contamination.
What grades or purities of this product does Molekula supply?
Molekula supplies this product in technical/industrial grade purity, suitable for bulk chemical synthesis and industrial applications.
Can Molekula supply this product in bulk quantities?
Yes, we offer bulk quantities of 3,3'-Methylene-bis-[5-methyloxazolidine] to meet large-scale production needs, with flexible packaging options.
What documentation is provided with an order of this chemical?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation to ensure traceability and compliance.
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.