Ammonium hydrogen maleate
Synonyms
Monoammonium maleate;
2-Butenedioic acid (2Z)-, monoammonium salt;
Category
Anionic Surfactant
> Carboxylate
>> Dicarboxylate
>>> Alkenyl Dicarboxylate
>>>> Linear Alkenyl Dicarboxylate
Chemical Numbering System
CAS: 44742-89-4
EINECS: 256-163-5
Molecular Formula & Molecular Weight
Molecular Formula: C4H7NO4; C4H4O4.H3N
Molecular Weight: 133.10
Structure
Properties
Appearance (1), white solid.
Solubility soluble in water.
Stability stable. Easily oxidized. Under alkaline condition, ammonia is released.
Risk Solid form: corrosion; 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: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent cleansing, dispersing abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
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, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
Major Uses
1, Typical applications
Use as cleansing agent.
2, Organic synthesis
Use as intermediate in organic synthesis.
3, Electronic industry
Additive in electronic industry.
Manufacturers
Update: 20140309(1); 20181015(2);