Sodium dehydroacetate
Synonyms
2H-Pyran-2,4(3H)-dione, 3-acetyl-6-methyl-, ion(1-), sodium (1:1);
Sodium 1-(3,4-dihydro-6-methyl-2,4-dioxo-2H-pyran-3-ylidene)ethanolate;
Category
Anionic Surfactant
> Alkoxide
Chemical Numbering System
CAS: 4418-26-2
EINECS: 224-580-1
Molecular Formula & Molecular Weight
Molecular Formula: C8H7NaO4
Molecular Weight: 190.13
Structure
Properties
Appearance (1), solid.
Solubility soluble in water.
Stability stable.
Risk Solid form: flammable material; irritation, irritation to skin, eye, respiratory system. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS label: 
Animal Toxicity
Table 1 Animal toxicity values
|
dog intravenous LD50: |
400mg/kg[1] |
|
dog oral LDLo |
452mg/kg[1] |
|
mouse oral LD50 |
1050mg/kg[1] |
|
rabbit oral LD50 |
500mg/kg[1] |
|
rat oral LD50 |
500mg/kg[1] |
Reproductive effect[1].
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent antimicrobial, antibacterial, preservative abilities.
Synthesis
Dehydroacetic acid reacts with sodium hydroxide and/or sodium carbonate, then obtains.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
GB 25547 Food safety national standard -- Food additive -- Sodium dehydroacetate
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Solid |
|
|
Heavy metals (as Pb), mg/kg, ≤ |
20 |
|
As, mg/kg, ≤ |
3 |
Test Methods
(1), Heavy metals (as Pb)
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30799 The test method of food detergents -- Determination of heavy metals
(2), As
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30797 The test method of food detergents -- Determination of total arsenic
3, Product standards
(1), Chinese standards
(1a), GB 25547 Food safety national standard -- Food additive -- Sodium dehydroacetate
4, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
(b), Used in cosmetics, should be test for harmful substances or furtherly test for microorganisms, according to local regulations and standards.
Major Uses
1, Typical applications
Use as preservative, antimicrobial agent.
2, Personal care products
Preservative in personal care products.
* * * * * *
Further information:
(1), In accordance with EU regulations (EC) No 1223/2009, directive 86/199/EEC, be included in Annex V/13.
Maximum concentration is 0.6% (as acid).
Not to be used in aerosol dispensers (sprays).
(2), In accordance with Safety and Technical Standards for Cosmetics (2015 Edition) of China, be included in preservatives allowed.
Maximum concentration is 0.6% (as acid).
Not to be used in aerosol dispensers (sprays).
3, Food
Use as food additive (preservative).
4, Forestry
Use as wood preservative.
Manufacturers
References
[1]: ChemIDplus. 4418-26-2, Sodium dehydroacetate
Update: 20140309(1); 20180826(2);