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2,2-Dimethyl-1,3-propanediol

Chemical Structure Application
2,2-Dimethyl-1,3-propanediol
2,2-Dimethyl-1,3-propanediol structure
CAS No.
126-30-7
Chemical Name:
2,2-Dimethyl-1,3-propanediol
Synonyms
Neol;NEOL(R);NPG Glycol;Neopentanediol;2,2-Dimethyl-1;NEOPENTYL GLYCO;NEOPENTYL GLYCOL;-1,3-propanedioL;Dimethylolpropane;NEOPENTYLENE GLYCOL
CBNumber:
CB9111688
Molecular Formula:
C5H12O2
Formula Weight:
104.15
MOL File:
126-30-7.mol

2,2-Dimethyl-1,3-propanediol Properties

Melting point:
126-128 °C
Boiling point:
208 °C
Density 
1.06
vapor density 
3.6 (vs air)
vapor pressure 
<0.8 mm Hg ( 20 °C)
refractive index 
1.4406 (estimate)
Flash point:
107 °C
storage temp. 
Inert atmosphere,Room Temperature
solubility 
830g/l
form 
Crystalline Chunks
pka
14.57±0.10(Predicted)
color 
White
explosive limit
1.34%, 149°F
Water Solubility 
830 g/L (20 ºC)
Sensitive 
Hygroscopic
Merck 
14,6458
BRN 
605291
Stability:
Stable. Incompatible with strong oxidizing agents, acetic anhydride, acid chlorides, moisture. Combustible.
CAS DataBase Reference
126-30-7(CAS DataBase Reference)
Indirect Additives used in Food Contact Substances
NEOPENTYL GLYCOL
FDA 21 CFR
175.105; 175.320; 177.1680
EWG's Food Scores
1
FDA UNII
QI80HXD6S5
NIST Chemistry Reference
1,3-Propanediol, 2,2-dimethyl-(126-30-7)
EPA Substance Registry System
Neopentyl glycol (126-30-7)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS05,GHS02,GHS07
Signal word  Danger
Hazard statements  H228-H315-H319-H318
Precautionary statements  P210-P240-P241-P264-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313-P280-P305+P351+P338-P280i-P310a
Hazard Codes  Xi
Risk Statements  36/37/38-36-41
Safety Statements  26-36-39
WGK Germany  1
RTECS  TY5775000
3
Autoignition Temperature 750 °F
TSCA  Yes
HS Code  29053990
NFPA 704
1
1 0

2,2-Dimethyl-1,3-propanediol price More Price(8)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 538256 2,2-Dimethyl-1,3-propanediol 99% 126-30-7 25g $24.2 2021-03-22 Buy
Sigma-Aldrich 538256 2,2-Dimethyl-1,3-propanediol 99% 126-30-7 3kg $79.1 2021-03-22 Buy
TCI Chemical D0791 2,2-Dimethyl-1,3-propanediol >98.0%(GC) 126-30-7 25g $15 2021-03-22 Buy
TCI Chemical D0791 2,2-Dimethyl-1,3-propanediol >98.0%(GC) 126-30-7 500g $25 2021-03-22 Buy
Alfa Aesar A10340 2,2-Dimethyl-1,3-propanediol, 99% 126-30-7 500g $27.8 2021-03-22 Buy

2,2-Dimethyl-1,3-propanediol Chemical Properties,Uses,Production

Chemical Structure

The chemical formula for Neopentyl glycol (NPG) is C5H12O2, and it is a propane-1,3-diol carrying two methyl groups at position 2.Neopentyl glycol is soluble in water, benzene, chloroform, and very soluble in ethanol and diethyl ether. Neopentylglycol (NPG) is a unique polyalcohol offering superior performance advantages in many end-use applications due to its high chemical and thermal stability. It is a unique diol offering superior performance advantages in many end-use applications. These advantages are derived from its chemical structure. The location of the hydroxyl groups on primary carbon atoms allows rapid esterification. Additionally, the two methyl groups, instead of the usual two hydrogen atoms, on the alpha carbon atom are responsible for the high chemical and thermal stability of Neopentylglycol and its derivatives.

Application

Neopentyl glycol is used in the synthesis of polyesters, paints, lubricants, and plasticizers. When used in the manufacture of polyesters, it enhances the stability of the product towards heat, light, and water. By esterification reaction with fatty or carboxylic acids, synthetic lubricating esters with reduced potential for oxidation or hydrolysis, compared to natural esters, can be produced. NPG is used primarily in base resins for coatings. In powder coating formulations, Neopentylglycol offers the additional advantage of providing small differences between the glass transition temperature and melting point. Important areas of application include general metal, appliance, metal furniture, automotive and machinery coatings. Important uses are also found in hydraulic fluids, synthetic lubricant oils, greases, metalworking fluids and aircraft engine lubricants. Other outlets include textiles, pharmaceuticals, pesticides, plasticizers and petroleum.
High quality NPG is shipped as flake, molten and slurry. The high-quality NPG is the component in polyester resins for industrial coatings and fiberglass-reinforced plastics applications, and most polyester resin formulations contain NPG as the sole glycol component, or it is used in conjunction with a modifying glycol to achieve desired properties. NPG is also used in polyester polyols for polyurethane coatings for the automotive, industrial maintenance, transportation, and aerospace markets.

Chemical Properties

white solid

Uses

NPG Glycol is used in the synthesis of tetraphenylporphyrins. Also used in the synthesis of Bryostatin 2, a protein kinase modulator.

Uses

In the manufacture of plasticizers, polyesters, as modifier of alkyd resins.

General Description

White crystalline solid. Melting point 130°C.

Air & Water Reactions

Soluble in water.

Reactivity Profile

2,2-Dimethyl-1,3-propanediol may generate toxic gases in combination of with alkali metals, nitrides, and strong reducing agents. Reacts with inorganic acids and carboxylic acids to form esters plus water. Converted to aldehydes or acids by oxidizing agents. May initiate the polymerization of isocyanates and epoxides.

Health Hazard

May be harmful by ingestion or skin absorption. Causes eye and skin irritation. Material is irritating to mucous membrane and upper respiratory tract. INHALATION: Call for medical aid. Remove to fresh air. If breathing has stopped, give artificial respiration. If breathing is difficult, give oxygen.

Fire Hazard

Special Hazards of Combustion Products: Emits toxic fumes under fire condition.

Purification Methods

Crystallise the diol from *benzene or acetone/water (1:1). [Beilstein 1 IV 2551.]

2,2-Dimethyl-1,3-propanediol Preparation Products And Raw materials

Raw materials

Preparation Products


2,2-Dimethyl-1,3-propanediol Suppliers

Global( 412)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Capot Chemical Co.,Ltd.
+86(0)13336195806 +86-571-85586718
+86-571-85864795 sales@capotchem.com China 20012 60
Henan DaKen Chemical CO.,LTD.
+86-371-66670886
info@dakenchem.com China 20914 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22607 55
ATK CHEMICAL COMPANY LIMITED
+86 21 5161 9050/ 5187 7795
+86 21 5161 9052/ 5187 7796 ivan@atkchemical.com CHINA 26751 60
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418679
86-0551-65418697 info@tnjchem.com China 3000 55
Shanghai Zheyan Biotech Co., Ltd.
18017610038
zheyansh@163.com CHINA 3623 58
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 29954 58
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
027-59599243 linda@hubeijusheng.com CHINA 28229 58
Jinan Finer Chemical Co., Ltd
+8615508631887 +86-531-88989536
+86-531-88989539 sales@finerchem.com CHINA 1706 58
Hebei Guanlang Biotechnology Co., Ltd.
+8619930503282
sales3@crovellbio.com China 5892 58

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View Lastest Price from 2,2-Dimethyl-1,3-propanediol manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-08-26 Neopentyl glycol
126-30-7
US $10.50 / KG 1KG 99% 10 ton Hebei Crovell Biotech Co Ltd
2021-08-12 Neopentyl glycol CAS126-30-7
126-30-7
US $900.00 / KG 1KG 99% 20tons Shanghai Dumi Biotechnology Co.,ltd
2021-07-13 Neopentyl glycol
126-30-7
US $35.00 / Kg/Bag 1KG 99% 1000tons/month Hebei Yanxi Chemical Co., Ltd.

2,2-Dimethyl-1,3-propanediol Spectrum


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