Petro Chemicals

Chemical composition

DMDMH is also known as DMDM ​​hydantoin, full name 1.3 dimethylhydroxymethyl-5.5 dimethyl hydantoin, preservative bactericide (hydantoin)

Chemical name: 1.3-dimethylhydroxymethyl dimethyl hydantoin, referred to as dimethylhydroxymethyl hydantoin, English abbreviation DMDMH.

Molecular formula C7H12N2O4

Physical and chemical properties

Colorless transparent liquid, slightly aldehyde smell, freezing point -11℃ is a formaldehyde releaser. Soluble in water and alcohol, good heat resistance.

Physical and chemical indicators

Appearance	Colorless to light yellow transparent liquid
Active matter content	55.0%±2.0%
pH value	6.0-8.0
Density (20℃)	1.140-1.180g/ml
Free formaldehyde	≤1%
Total formaldehyde	≥17%
Stability	Good heat resistance

Performance and use

This product is a broad-spectrum, highly effective antibacterial preservative that resists Gram-positive bacteria, Gram-negative bacteria, molds, fungi, yeasts, etc. by releasing formaldehyde.

It has good compatibility with various emulsifiers, cationic, anionic, non-ionic surfactants and proteins.

It has a wide range of applicable pH values, and can be used in pH2.0-12.0.

This product is low in toxicity, and the acute oral median lethal dose LD50 of rats is >2700mg/kg. It does not contain heavy metals and halogen compounds, and is non-mutagenic, non-toxic, allergenic, and non-variable.

It can be used in cosmetics and personal care products, with a maximum concentration of 0.6%. It can also be used in cosmetics after being combined with iodopropynyl butyl carbamate. Such as shampoo, conditioner, shaving products, foundation, lotion, cream, baby products, sunscreen and cleaning agents and other daily chemical products for antiseptic sterilization (products that need to be rinsed with water).

It can also be widely used in water-based systems and water treatment such as coatings, polymer synthetic emulsions, cleaning agents, foaming agents, etc. It is a new generation of preservatives that has been widely used in the world.

Usage and dosage

Add appropriately according to the application formula. The general concentration is 0.05%-0.6%. This product can be added in any process, but it should be avoided as much as possible to add it above 50 ℃. It is recommended to add it in the last process below 50 ℃. This product should avoid direct contact with the eyes during operation; once in contact, it should be rinsed immediately with plenty of water without delay! It cannot be in contact with the skin for a long time. Please seek medical attention if necessary.

Packaging and storage

25 kg, 200 kg/plastic barrel. Keep the barrel lid tightly closed during storage and store in a cool and dry place. The product may crystallize when stored at temperatures close to 5°C. It is recommended to store it at temperatures above 5°C for one year.

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