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MBO 92%
SINOBIO
29339900
Name: 3, 3-Methylenebis (5-METHYLOXAZOLIDINE)(MBO)
CAS: 66204-44-2
Chemical formula: C9h18n2o2
Appearance: Colorless or yellow transparent liquid
MBO, also known as 3,3'-Methylenebis(5-methyloxazolidine) or 3,3'-Methylenebis[5-Methyloxazolidine], is an industrial biocide with CAS No. 66204-44-2. MBO 92% is supplied as a colorless or yellow transparent liquid and is primarily used for microbial control in water-based metalworking fluids, cutting fluids, water treatment systems and other industrial formulations.
MBO is designed to provide broad-spectrum antimicrobial protection and can help control bacterial and fungal growth in aqueous formulations. It offers good compatibility with metalworking fluid formulations and can be used for both preventive preservation and treatment of microbial contamination.

MBO is primarily used as a biocide and preservative for water-based metalworking fluids. It helps control bacterial and fungal growth in cutting fluids, machining fluids, grinding fluids and other aqueous metalworking formulations.
MBO can be incorporated into water-based cutting fluid systems to help maintain formulation stability and control microbial contamination during storage and use.
MBO can also be used in selected industrial water treatment applications where microbial growth needs to be controlled.
MBO may be used as a preservative or antimicrobial component in selected water-based coatings and paint formulations, subject to formulation and regulatory requirements.
Broad-spectrum antimicrobial activity
Suitable for water-based metalworking fluids
Effective bacterial and fungal growth control
Good formulation compatibility
Suitable for preventive preservation and microbial control
Available in bulk industrial packaging
Suitable for international B2B supply
MBO can be added to metalworking fluid concentrates or used during on-site treatment. The product page lists a recommended addition level of 2–4% for concentrated liquid and 0.1–0.2% for on-site sterilization. Actual dosage should be determined according to the formulation, contamination level, operating conditions and applicable regulatory requirements.
Sinobio supplies MBO 92% CAS 66204-44-2 for industrial applications, particularly water-based metalworking fluids and other formulations requiring microbial control.
For bulk orders, customers can contact Sinobio for product specifications, COA, sample availability, packaging options, MOQ, lead time and quotation.
Item | Specification |
|---|---|
Product Name | MBO 92% |
Chemical Name | 3,3'-Methylenebis(5-methyloxazolidine) |
Synonym | 3,3'-Methylenebis[5-Methyloxazolidine] |
CAS No. | 66204-44-2 |
Molecular Formula | C9H18N2O2 |
Appearance | Colorless or Yellow Transparent Liquid |
Assay | 92.0 ± 1% |
pH | 9.0–11 |
Specific Gravity | 1.0–1.1 g/cm³ |
Refractive Index | 1.474 ± 0.002 |
Product Type | Industrial Biocide |
Main Application | Metalworking Fluids |
Other Applications | Cutting Fluids, Industrial Water Treatment, Paints and Coatings |
Recommended Dosage | 2–4% for Concentrated Liquid |
On-Site Sterilization Dosage | 0.1–0.2% |
Packaging | 200 kg Drum / 1100 kg IBC |
Sample | Available |
Custom Packaging | Available upon request |
Application | Bacterial and Fungal Growth Control |
Supply Type | Manufacturer / Supplier |
MOQ | To be confirmed according to order quantity and destination |
Lead Time | To be confirmed according to order quantity |
OEM/ODM | Available upon request |
Standard packaging includes:
*200 kg Drum
*1100 kg IBC Tank
Samples are also available, and customized packaging can be discussed according to order quantity.
A1: MBO is 3,3'-Methylenebis(5-methyloxazolidine), an industrial biocide with CAS No. 66204-44-2, mainly used for microbial control in water-based metalworking fluids and other industrial formulations.
A2: The CAS number of MBO is 66204-44-2.
A3: The standard MBO product specification is 92.0 ± 1% assay.
A4: MBO is mainly used as a biocide and preservative for water-based metalworking fluids, cutting fluids, industrial water treatment, paints and coatings.
A5: Yes. MBO is specifically used for microbial control in water-based metalworking fluids and can help control bacterial and fungal growth.
A6: The current product page lists 2–4% for concentrated liquid and 0.1–0.2% for on-site sterilization. Actual dosage should be determined according to the formulation and application conditions.
A7: MBO 92% is supplied as a colorless or yellow transparent liquid.
A8: Standard packaging includes 200 kg drums and 1100 kg IBC tanks. Customized packaging can also be discussed according to order quantity.
A9: Yes. Samples are available, and customers can contact Sinobio for COA, product specifications and sample arrangements.
A10: Sinobio supplies MBO 92% CAS 66204-44-2 for international B2B customers and industrial applications.
A11: MOQ depends on the packaging, order quantity and destination. Please provide your required quantity and delivery location for a quotation.
A12: The price depends on order quantity, packaging and destination. Please contact us with your required quantity to receive a current quotation.