Product Introduction
Neopentyl Glycol (NPG) is an organic compound with the chemical formula C5H12O2 . It appears as a white crystalline solid ,odorless and hygroscopic. Mainly used for the production of unsaturated polyester resin.
Product Properties
|
Product Name： |
Neopentyl Glycol (NPG) |
|
CAS No.： |
126-30-7 |
|
Molecular Formula: |
C5H12O2 |
|
Structural formula: |
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Product Specification
|
Item |
Index |
Test Result |
|
Appearance |
White flake crystal |
White flake crystal |
|
Purity(dry base), %(m/ m) min |
99.2 |
99.61 |
|
Water, %(m/ m) max |
0.2 |
0.049 |
|
Color(50% aqueous solution), Hazen max |
5 |
2 |
|
Acidity as acetic acid ,%( m/ m) |
0.01 |
0.0022 |
Two Main Production Processes of Neopentyl Glycol:
Disproportionation method Method:
Isobutyraldehyde and formaldehyde condense at 30-35°C, with a pH value of 9-11, in the presence of an alkali catalyst to produce hydroxy-tert-butyraldehyde. Excess formaldehyde is then reduced to 2,2-Dimethylpropane-1,3-diol under strong base conditions, while formaldehyde is oxidized, and a reaction with alkali produces sodium formate.
Hydrogenation Method:
Isobutyraldehyde and formaldehyde condense to form hydroxyneopentaldehyde, which is subsequently reduced by hydrogenation.
Product Application
Neopentyl Glycol has a wide range of uses, primarily as a plasticizer in the production of unsaturated polyester resins, oil-free alkyd resins, polyurethane foams, and elastomers.
It is also used as an additive in high-grade lubricants and other fine chemicals.
It is also an excellent solvent and can be utilized in the selective separation of aromatics and cycloalkyl hydrocarbons.
It is resistant to water, chemicals, and weather, and amino-baking paints made with it have good light retention and do not yellow. Additionally, it can serve as a raw material for the production of inhibitors, stabilizers, and insecticides.
It can also be used as a raw material for the production of inhibitor, stabilizer and insecticide.
Product Packaging & Storage
Packaging:
· 25 kg per bag, 14 MT per 20' GP container (without pallet).
· 25 kg per bag, 12 MT per 20' GP container (with pallet).
. 25 kg per bag, 28 MT per 40' GP container (with pallet or not).
· 500 kg per jumbo bag, 10 MT per 20' GP container.
Storage :
Keep the packaging intact during storage. It should be stored separately from oxidizing agents and food chemicals, and mixing should be strictly avoided. The area should be kept ventilated, dry, and protected from direct sunlight. Storage temperature should be between -50°C and 45°C.
FAQ
Q: What is the HS code for NPG ?
A: It is 29053920.
Q: How to Determine if Neopentyl Glycol Has Absorbed Moisture?
A: It is hygroscopic, so it's important to check whether it has absorbed moisture before use.
Visual Inspection: After absorbing moisture, it becomes more turbid and may even form precipitates. Therefore, its appearance can be observed to determine whether moisture absorption has occurred.
Property Inspection: Moisture-absorbed it will undergo changes in its properties, such as abnormal degradation, crystallization, yellowing, or unusual odors. A property check should be performed before use.
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