Trimethylolpropane CAS#77-99-6
Polyol Properties: Trimethylolpropane contains three hydroxymethyl groups, giving it polyol properties similar to glycerol, enabling versatile chemical reactions with acids, aldehydes, and diisocyanates.
Wide Industrial Applications: TMP is used in alkyd resins, polyurethanes, polyester resins, coatings, lubricants, plasticizers, and many other industries, showcasing its versatility.
Essential in PVC Stabilization: TMP plays a key role in producing heat stabilizers for PVC resins, making it indispensable in the plastics industry.
Safe and Stable: Trimethylolpropane is stable at room temperature, has low toxicity, and is safe to handle when stored properly below 30°C.
Trimethylolpropane (TMP), also known as 2-ethyl-2-hydroxymethyl-1,3-propanediol, trimethylol propane, and 2,2-dihydroxymethylbutanol, contains three hydroxymethyl groups in its molecular structure, giving it polyol properties similar to glycerol. This structure enables TMP to react with organic acids to form monoesters or polyesters, with aldehydes and ketones to form acetals and ketals, and with diisocyanates to create carbamates.
TMP is a widely used chemical raw material and intermediate product, finding applications in industries such as alkyd resins, polyurethanes, unsaturated resins, and polyester resins. It is also utilized in coatings, aviation lubricants, plasticizers, surfactants, wetting agents, explosives, and printing inks. Additionally, TMP serves as an essential component in the manufacturing of textile auxiliaries and heat stabilizers for PVC resins, highlighting its versatility across multiple sectors.
Parameters
Melting point | 56-58 °C(lit.) |
Boiling point | 159-161 °C2 mm Hg(lit.) |
bulk density | 700kg/m3 |
density | 1.176 |
vapor density | 4.8 (vs air) |
vapor pressure | <1 mm Hg ( 20 °C) |
refractive index | 1.4850 (estimate) |
Fp | 172 °C |
storage temp | Store below +30°C. |
solubility | H2O: 0.1 g/mL, clear |
pka | 14.01±0.10(Predicted) |
form | Flakes |
color | White |
PH | 6.5 (100g/l, H2O, 20℃)(External MSDS) |
explosive limit | 2-11.8%(V) |
Water Solubility | soluble |
BRN | 1698309 |
InChIKey | ZJCCRDAZUWHFQH-UHFFFAOYSA-N |
LogP | -0.975 (est) |
CAS DataBase Reference | 77-99-6(CAS DataBase Reference) |
NIST Chemistry Reference | 1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-(77-99-6) |
EPA Substance Registry System | Trimethylolpropane (77-99-6) |
Safety Information
Safety Statements | 22-24/25 |
WGK Germany | 1 |
RTECS | TY6470000 |
Autoignition Temperature | 375 °C DIN 51794 |
TSCA | Yes |
HS Code | 29054100 |
Hazardous Substances Data | 77-99-6(Hazardous Substances Data) |
Toxicity | LD50 orally in Rabbit: > 2500 mg/kg |
