SoleChem

4,4-dimethyloxazolidine

CAS
51200-87-4
EC
257-048-2
Mol. Weight
101.15 g/mol

Description

4,4-Dimethyloxazolidine (CAS 51200-87-4) is a cyclic amine biocide and preservative used across industrial and personal care applications. It functions by releasing formaldehyde under aqueous conditions, delivering broad-spectrum antimicrobial activity.

This chemical provides effective control against bacteria, fungi, and yeast in various environments. In metalworking and industrial lubricants, it controls microbial contamination in water-miscible cutting fluids and coolants, extending fluid service life.

Personal care formulators incorporate it as a preservative booster in rinse-off and leave-on products. This is particularly common where formaldehyde-donor preservation systems are specified for product stability and safety.

In oilfield and water treatment operations, it is used to prevent biofouling and microbiologically influenced corrosion. It is frequently applied in injection water systems and process pipelines to maintain operational integrity.

The compound also functions as a corrosion inhibitor in industrial fluid formulations where microbial-driven degradation accelerates metal attack. This dual-action capability makes it a versatile additive for complex industrial systems.

The product is supplied as a liquid, typically as a concentrated aqueous or neat solution. Technical grade is the standard commercial form for industrial applications, while cosmetic-grade material is available for personal care use.

Packaging ranges from drums to IBC totes depending on volume requirements and logistical needs. It is handled according to standard industrial safety protocols to ensure stability and efficacy during storage and transport.

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Physical Properties

Boiling Point 124-125 °C @ Press: 750 Torr
Density 0.942 g/mL at 25 °C
Flash Point 120 °F
Appearance Colorless to light yellow Liquid
Refractive Index n 20/D 1.432
Log P 1.11 at 25℃

Safety & Handling (Learn More)

Danger GHS02 GHS05 GHS07
Hazard Statements
H226 Flammable liquid and vapor
H302 Harmful if swallowed
H312 Harmful in contact with skin
H315 Causes skin irritation
H317 May cause an allergic skin reaction
H318 Causes serious eye damage
H319 Causes serious eye irritation
H332 Harmful if inhaled
H335 May cause respiratory irritation
H302+H332 Harmful if swallowed or if inhaled
Precautionary Statements
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.
P242 Use non-sparking tools.
P243 Take action to prevent static discharges.
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.
P317 Get emergency medical help.
P319 Get medical advice/attention if you feel unwell.
P321 Specific treatment (see … on this label).
P330 Rinse mouth.
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.
P332+P317 Get emergency medical help.
P333+P317 Get emergency medical help.
P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P362+P364 Take off contaminated clothing and wash it before reuse.
P370+P378 Use … for extinction.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P403+P235 Store in a well-ventilated place. Keep cool.
P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code 2934999090
WGK (Germany) 2

Documentation

Other Names

4,4-Dimethyl-1,3-oxazolidine|Oxazolidine A|Dimethyl oxazolidine|Oxadine A|Oxazolidine, 4,4-dimethyl-|Oxaban A|Zoldine ZA|Nuosept 101

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