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Preservative

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DMDMH (DMDM Hydantoin)

1.Introduction

Chemical Name

1,3-dihydroxymethyl-5,5-dimethyl Glycolylurea

CAS #

6440-58-0

Formula

C7H12N2O4

Molecular Weight

188

The product is Transparent yellowish. It’s easily dissolved in water, alcohol, glycol, and be steady in aqueors phase and water solution of oil. It may be remain steady in –10~50℃, PH 6.5~8.5 for 1 year.

2.Specifications:

Item

Specification

Appearance

Transparent white liquid

Content of Active Matter  %≥

55

Specific Gravity (d420 )

1.16

Acidity ( PH )

6.5~7.5

Content of formaldehyde       %

17~18

 3.Applications

DMDMH is soluble in water freely. It can be added to the cream modifying agent or the emulsifying components of  coating. DMDMH has a strong compatibility with cation, anion and nonionic surface active agent, emulsifier agent and protein. Test proved, it can keep antibacterial activity in large range of PH and temperature for long time. It can effectively constrain the growing of Gram-possitive becterium, Gram-negative bacterium, yeasts and mildew. Commended dosage: 0.1~0.3, temperature: under 50℃.

4.Package

Packed with plastic bottles or drums. 10kg/box (1kg×10bottles). Export package is 25kg or 250kg/plastic drum.  

5.Storage

Avoid freezing. Store at or near room temperature, out of direct sunlight. Keep containers tightly closed when not in use. Storage at temperatures below 10℃.for a long period of time, may cause formation of crystals, requires thawing and mixing prior to use, with no detrimental effect to product quality or efficacy.

6.Shelf life

2 years

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