Paint chemicals

126-30-7

C5H12O2

Uses:

The products are applied to synthetic unsaturated polyester resins, oil-free alkyd resins, plasticizers for polyurethane foams and elastomers, surfactants, insulating materials, printing inks, polymerization blocking agents, and additives for synthetic aviation lubricant oils.

 Names and Identifiers

Name	2,2-Dimethyl-1,3-propanediol
Synonyms	NEOPENTYL GLYCO Neopentyl glycol 2-ethylpropane-1,3-diol 2,2-Dimethylpropan-1,3-diol 2,2-Dimethyl-1,3 propandiol 2,2-dimethylpropane-1,3-diol 2,2-Dimethyl-1,3-propanediol 1,3-propanediol,2,2-dimethyl- 2,2-Dimethyl-1,3-dihydroxypropane 1,3-Dihydroxy-2,2-dimethylpropane 2,2-DIMETHYL-1,3-PROPANEDIOL (NPG) 2,2-dimethyl-1,3-propanediol (Neopentyl Glycol)
CAS	126-30-7
EINECS	204-781-0
InChI	InChI=1/C5H12O2/c1-2-5(3-6)4-7/h5-7H,2-4H2,1H3

​Physico-chemical Properties

Molecular Formula	C5H12O2
Molar Mass	104.15
Density	1.06
Melting Point	126-128°C
Boling Point	208 °C
Flash Point	107 °C
Water Solubility	830 g/L (20 ºC)
Solubility	830g/l
Vapor Presure	<0.8 mm Hg ( 20 °C)
Vapor Density	3.6 (vs air)
Appearance	White crystal
Color	White
Merck	14,6458
BRN	605291
pKa	14.57±0.10(Predicted)
Storage Condition	Inert atmosphere,Room Temperature
Stability	Stable. Incompatible with strong oxidizing agents, acetic anhydride, acid chlorides, moisture. Combustible.
Sensitive	Hygroscopic
Explosive Limit	1.34%, 149°F
Refractive Index	1.4406 (estimate)
MDL	MFCD00004685
Physical and Chemical Properties	Properties of white crystalline solid, odorless, with hygroscopic. melting point 124~130 ℃ boiling point 210 ℃ relative density 1.06g/cm3 flash point 129 ℃ solubility, lower ketones, ethers and aromatic compounds, etc.
Use	Mainly used in the manufacture of resins, plasticizers and surfactants

Risk and Safety

Hazard Symbols	Xi – Irritant
Risk Codes	R36/37/38 – Irritating to eyes, respiratory system and skin. R36 – Irritating to the eyes R41 – Risk of serious damage to eyes
Safety Description	S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 – Wear suitable protective clothing. S39 – Wear eye / face protection.
WGK Germany	1
RTECS	TY5775000
FLUKA BRAND F CODES	3
TSCA	Yes
HS Code	29053990

Reference Information

LogP	-0.15 at 25℃
Uses	Mainly used in the manufacture of resins, plasticizers and surfactants Neopentyl glycol has a wide range of uses, mainly used for the production of unsaturated polyester resins, oil-free alkyd resins, plasticizers for polyurethane foams and elastomers, additives for advanced lubricating oils and other fine chemicals. Neopentyl glycol is an excellent solvent and can be used for selective separation of aromatic hydrocarbons and cycloalkyl hydrocarbons. Neopentyl glycol has water resistance, chemical resistance and weather resistance. Its amino baking paint has good gloss retention and does not turn yellow. It can also be used as a raw material for the production of polymerization inhibitors, stabilizers, and pesticides. Plasticizer. Organic synthesis. Polyester synthetic raw materials.
production method	1. sodium formate isobutyraldehyde and formaldehyde are condensed in the presence of 30-35 ℃, pH 9-11, and alkali catalyst to generate hydroxyl tert-butyraldehyde, and excess formaldehyde is reduced to neopentyl glycol under strong alkali conditions, formaldehyde is oxidized and reacts with alkali to generate sodium formate. The reaction liquid is neutralized with formic acid, distilled and dehydrated under reduced pressure, and the concentrated liquid is extracted in layers. After removing sodium formate, it is cooled, crystallized and separated to obtain the finished product. 2. Hydrogenation method is obtained by condensation of isobutyraldehyde and formaldehyde to obtain hydroxyneopental, which is then obtained by hydrogenation reduction.
auto-ignition temperature	750 °F

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