Overview
Dimorpholinomethane (CAS 5625-90-1 ), also known as 4,4-Methylenedimorpholine, is a morpholine-derived amine used industrially as a biocide and corrosion inhibitor. It functions by releasing formaldehyde slowly under use conditions.
This mechanism provides controlled antimicrobial and metal-protection activity across various aqueous systems. In metalworking fluids, it acts as a formaldehyde-releaser biocide to control bacterial and fungal growth.
It is commonly used in water-miscible cutting and grinding fluids to extend fluid service life. Water treatment formulations incorporate it to suppress microbial fouling in recirculating cooling systems and process water.
Coatings, adhesives, and sealant systems use it as a preservation agent to prevent microbial degradation during storage. This helps avoid in-can spoilage and maintains the integrity of the chemical formulations.
Textile processing and leather finishing operations also rely on it for antimicrobial protection. It is effective in aqueous process baths and for the long-term protection of finished industrial goods.
The product is supplied as a liquid, typically at concentrations around 80% active content in aqueous solution. Technical grade is the standard commercial offering for industrial biocide requirements.
It is aligned with metalworking fluid formulation standards and industrial safety protocols. Packaging ranges from drums to intermediate bulk containers, reflecting its primary use in large-volume applications.
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Physical Properties
| Boiling Point | 111-113 °C @ Press: 8 Torr |
| Density | 1.0494 g/cm³ @ Temp: 20 °C |
| Appearance | Colorless to light yellow Liquid |
| Water Solubility | Soluble in water. |
| Refractive Index | 1.4790 (estimate) |
Safety & Handling
Danger GHS05 GHS07 GHS08 Hazard Statements H302 Harmful if swallowed H312 Harmful in contact with skin H314 Causes severe skin burns and eye damage H317 May cause an allergic skin reaction H318 Causes serious eye damage H332 Harmful if inhaled H341 Suspected of causing genetic defects H350 May cause cancer H373 May causes damage to organs through prolonged or repeated exposure H302+H312+H332 Harmful if swallowed, in contact with skin or if inhaled Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P280 Wear protective gloves/protective clothing/eye protection/face protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P363 Wash contaminated clothing before reuse. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P333+P317 Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P301+P330+P331 Rinse mouth. Do NOT induce vomiting. P302+P361+P354 IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower. P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Other Names
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Chemical Properties
- CAS Number
- 5625-90-1
- EC Number
- 227-062-3
- Mol. Weight
- 186.25
- Category
- Amines