Preservatives & Biocides
REACH
DMDM hydantoin
CAS Number
6440-58-0
EC Number
229-222-8
Abbreviation
DMDMH
What is DMDM hydantoin?
DMDM hydantoin (CAS 6440-58-0), also marketed under the trade name Glydant, is a formaldehyde-releasing preservative used to prevent microbial contamination in aqueous formulations.
Where is DMDM hydantoin used?
- Personal care and cosmetics: preservation of rinse-off and leave-on products such as shampoos, conditioners, body washes, and lotions
- Industrial coatings and adhesives: in-can preservative for water-based paints, sealants, and latex systems
- Wet-state preservation of adhesive and elastomer compounds
- It delivers broad-spectrum antimicrobial activity against bacteria, yeast, and mold.
Commercial specifications
- Clear aqueous solution, typically 55% active concentration
- Packaging from drums to intermediate bulk containers (IBCs)
Other Names (Synonyms)
Dmdmh|Glydant|1,3-Bis(hydroxymethyl)-5,5-dimethylhydantoin|1,3-Dimethylol-5,5-dimethylhydantoin|Dantoin-DMDMH|Glycoserve-DMDMH|Dantoin dmdmh 55|Dimethylol-5,5-dimethylhydantoin
What are the physical properties of DMDM hydantoin?
Melting Point 98-100 °C
Boiling Point 303.7±52.0 °C(Predicted)
Density 1.349±0.06 g/cm3(Predicted)
Appearance Liquid
Color White to Off-White
Form Solid
Water Solubility 140g/L at 20℃
Vapor Pressure 0Pa at 25℃
Log P -2.9 at 20℃
How is DMDM hydantoin classified and handled safely? Learn More
Danger
GHS07· Irritant GHS08· Health Hazard
Hazard Statements
H302 Harmful if swallowed
H315 Causes skin irritation
H317 May cause an allergic skin reaction
H319 Causes serious eye irritation
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
Precautionary Statements
P233 Keep container tightly closed.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
Which trade and regulatory codes apply to DMDM hydantoin?
HS Code 29339900
Storage Class 10 - Combustible liquids
WGK (Germany) 3