DMDM Hydantoin (DMDMH, CAS 6440‑58‑0) is 55% aqueous cosmetic grade broad-spectrum preservative. It inhibits bacteria, yeast and mold with excellent compatibility with surfactants. Widely used in shampoo, shower gel, cream and wet-wipes formulations, maximum permitted 0.6% in EU cosmetics. TNJ Chemical supplies qualified material 55% liquid and 99% powder with samples and full supporting documents available.
Basic product information
Product name: DMDM Hydantoin (DMDMH)
CAS No：6440-58-0
Synonym：1,3-Bis(hydroxymethyl)-5,5-dimethylhydantoin, GlydantINCI Name：DMDM Hydantoin
Molecular Formula：C7H12N2O4
Molecular Weight：188.18
EINECS：229-222-8
Appearance: Colorless to pale yellow transparent liquid (55% aqueous solution) & 99% high purity powder.
Grade: Cosmetic grade, Active content 54-56 % & 99% high purity powder.
Physic-chemical Properties
Density (25℃) 1.14-1.17 g/cm³
pH value 5.0-7.0
Solubility Miscible with water, lower alcohol, glycol
Feature Broad-spectrum formaldehyde-releasing preservative; good compatibility with surfactants & emulsifiers; effective against bacteria, yeast and mold
Quality Specification
| Test Item | 55% Aqueous Liquid (Commercial Grade) | 99% High‑purity Powder |
|---|---|---|
| Appearance | Colorless to pale‑yellow clear liquid | White crystalline powder |
| Active Assay | 54.0‑56.0 % | ≥99.0 % |
| Water / Loss on drying | Balance solvent | ≤1.0 % |
| pH value (as‑is,25℃) | 5.0‑7.0 | 4.5‑6.0 (10% aqueous) |
| Free Formaldehyde | ≤2.0 % | ≤0.10 % |
| Total Formaldehyde | 17.0‑18.0 % | 30.0‑32.0 % |
| Density (25℃) | 1.14‑1.17 g/cm³ | ‑ |
| Heavy metals (Pb) | ≤10 ppm | ≤10 ppm |
| Arsenic (As) | ≤1 ppm | ≤1 ppm |
| Identification | Complies | Complies |
Application & Use
Cosmetics & personal-care: Broad‑spectrum preservative for rinse‑off & leave‑on products: shampoo, shower gel, cream, lotion, wet wipes. Recommended dosage: 0.1‑0.6% (EU max authorized 0.6%).
Good compatibility with most cosmetic raw materials, stable in wide pH range.
Packing
Liquid: 200 kg plastic drum / IBC 1000 L, or 25kg/plastic drum
Powder: 25kg/fiber drum
Storage & Transportation
Keep tightly sealed, store in cool, dry, ventilated warehouse, avoid high temperature. Prevent crystallization under low temperature.
Shelf‑life: 12 months under original sealed condition.
Transport as general chemical.
Disclaimer: This data sheet is for reference only, not contractual standard.
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