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Trimethylolpropane

CAS No.77-99-6
Chemical Name:Trimethylolpropane
CBNumber:CB3725999
Molecular Formula:C6H14O3
Formula Weight:134.17
MOL File:77-99-6.mol

Trimethylolpropane Property

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)
Flash point 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)
Indirect Additives used in Food Contact Substances TRIMETHYLOLPROPANE
FDA 21 CFR 175.105; 175.300; 175.320
CAS DataBase Reference 77-99-6(CAS DataBase Reference)
FDA UNII 090GDF4HBD
NIST Chemistry Reference 1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-(77-99-6)
EPA Substance Registry System Trimethylolpropane (77-99-6)
UNSPSC Code 12352104
NACRES NA.22

Safety

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

NFPA 704:

	1
0		0

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordWarning
Hazard statements H361fd
Precautionary statements P201-P202-P280-P308+P313-P405-P501

Trimethylolpropane Price More Price(13)

Brand: Sigma-Aldrich(India)
Product number: 93370
Product name : 1,1,1-Tris(hydroxymethyl)propane
Purity: dist., ≥98.0% (GC)
Packaging: 250G
Price: ₹2316.55
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 8.08394
Product name : 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol
Purity: for synthesis
Packaging: 100G
Price: ₹5399.99
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 8.08394
Product name : 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol
Purity: for synthesis
Packaging: 1KG
Price: ₹9270
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 93370
Product name : 1,1,1-Tris(hydroxymethyl)propane
Purity: dist., ≥98.0% (GC)
Packaging: 1KG
Price: ₹3799.58
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 8.08394
Product name : 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol
Purity: for synthesis
Packaging: 2.5KG
Price: ₹19580
Updated: 2022/06/14
Buy: Buy

Trimethylolpropane Chemical Properties,Usage,Production

Chemical Properties Trimethylolpropane is a Colorless, hygroscopic crystals. Soluble in water and alcohol. Combustible.The three primary hydroxyl groups undergo the normal OH group reactions.
Uses Trimethylolpropane acts as a precursor to alkyd resins, high-gloss coatings and ion exchange resins. It is also employed as a multifunctional monomer utilized for the production of coatings, ethoxylated and propoxylated trimethylolpropane derivatives. Further, it serves as a building block in the polymer industry.
Application Trimethylolpropane is used in saturated polyesters for coil coatings, alkyds for paints, polyurethanes for coatings and elastomers, acrylic acid esters for radiation curing, esters for synthetic lubricants, rosin esters and for surface treatment of pigments.
Large quantities of trimethylolpropane and its ethoxylated derivatives are used as precursors for urethanes and polyester resins. Another important field of application is in medium-oil and short-oil alkyd resins (→ Alkyd Resins). The resulting lacquers are characterized by excellent resistance to alkali, detergents, and water, combined with outstanding impact resistance and flexibility, as well as excellent clearness and clearness retention.
Definition ChEBI: Trimethylolpropane is a primary alcohol. It is used as a precursor for the manufacture of resins including alkyds, saturated polyesters and polyurethanes (polyester polyol and polycarbonate diol).
Synthesis Trimethylolpropane is made by the base-catalyzed aldol addition of butyraldehyde with formaldehyde followed by Cannizzaro reaction of the intermediate 2,2-bis(hydroxymethyl) butanal with additional formaldehyde and at least a stoichiometric quantity of base.
Purification Methods Various procedures have been suggested for separating the trimethylolpropane from the formate. For instance, the concentrated reaction solution can be extracted with an organic solvent, which is then evaporated and the crude trimethylolpropane is purifified by vacuum distillation. In another variant, the aqueous reaction solution is evaporated until most of the sodium formate crystallizes and is removed by hot fifiltration. The application of electrodialysis has also been suggested. The liquid trimethylolpropane which remains is liberated of residual salts with an ion exchanger and then distilled. The removal of discoloring impurities is described in. Cyclic diethers of the acetal type (1,3-dioxanes, formals) can be converted into TMP and methanol by metal-catalyzed hydrogenation. Removal of high boiling acetals by acid treatment has been described.
Purification Methods Crystallise it from acetone and ether and it distils at high vacuum. [Beilstein 1 III 2349.]