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Neopentyl glycol

CAS Number
126-30-7
EC Number
204-781-0
Chemical Formula
C5H12O2
Molecular Weight
104.15 g/mol

Description

Neopentyl glycol (CAS 126-30-7 ), commonly abbreviated as NPG, is a diol monomer used as a foundational building block in polymer and resin synthesis. Its symmetrical structure resists hydrolysis and oxidation, giving finished materials improved durability. This chemical is a key factor for formulators specifying long-life coatings and resins. NPG is a primary raw material in alkyd, polyester, and polyurethane resin production, where it improves weatherability and chemical resistance. In industrial and architectural coatings, it provides essential stability. In printing inks, it contributes to binder systems that require adhesion stability across various substrates and challenging exposure conditions. Adhesive and sealant manufacturers use NPG-based polyesters to achieve flexible yet durable bond lines. These are frequently utilized in construction and automotive assemblies to ensure long-term structural integrity. Personal care formulators incorporate it as a humectant and solvent carrier in emollients. Its low irritation profile supports use in skin-contact products, making it a versatile choice for cosmetic applications. The product is supplied as white crystalline flakes or powder, with molten liquid form available for bulk industrial shipments. Standard commercial grades include technical and polymer-grade specifications. These grades are perfectly suited to resin and coating production. Cosmetic-grade material meeting relevant purity thresholds is also available for personal care applications requiring high-quality standards. Contact us for supply of Neopentyl glycol Request Quote

Other Names (Synonyms)

2,2-Dimethylpropane-1,3-diol | 2,2-DIMETHYL-1,3-PROPANEDIOL | 1,3-Propanediol, 2,2-dimethyl- | Neopentylene glycol | Neol | NPG

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point127 °C
Boiling Point210 °C
Density1.1 g/cm³
Flash Point107 °C
Appearancewhite solid
ColorWhite
FormCrystalline Chunks
Water Solubility830 g/L (20 ºC)
Vapor Pressure<0.8 mm Hg ( 20 °C)
Refractive Index1.4406 (estimate)
Log P-0.15 at 25℃

Safety & Handling

Danger
GHS05· CorrosiveGHS07· Irritant

Hazard Statements

H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation

Precautionary Statements

P264Wash … thoroughly after handling.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P317Get emergency medical help.
P321Specific treatment (see … on this label).
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29053900
Storage Class11 - Combustible Solids
WGK (Germany)1