Home Categories Chemical Reagents Dipentaerythritol
A3107412

Dipentaerythritol , 90% , 126-58-9

Synonym(s):
2.2′[Oxybis(methylen)]bis[hydroxymethyl)]-1,3-propandiol;Dipentaerythritol

CAS NO.:126-58-9

Empirical Formula: C10H22O7

Molecular Weight: 254.28

MDL number: MFCD00004691

EINECS: 204-794-1

Pack Size Price Stock Quantity
100G RMB23.20 In Stock
250G RMB58.40 In Stock
500G RMB104.00 In Stock
2.5KG RMB438.40 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 215-218 °C (lit.)
Boiling point: 356°C
Density  1.36 g/cm3 (20℃)
vapor pressure  <0.00001 hPa (20 °C)
refractive index  1.4455 (estimate)
storage temp.  Store below +30°C.
solubility  2.4g/l
form  Crystalline Powder
pka 13.38±0.10(Predicted)
color  White
PH 5 (2g/l, H2O, 20℃)
Water Solubility  0.29 g/100 mL (20 ºC)
Sensitive  Hygroscopic
InChIKey TXBCBTDQIULDIA-UHFFFAOYSA-N
LogP 1.8 at 23℃
CAS DataBase Reference 126-58-9(CAS DataBase Reference)
NIST Chemistry Reference 1,3-Propanediol, 2,2'-[oxybis(methylene)]bis[2-(hydroxymethyl)-(126-58-9)
EPA Substance Registry System Dipentaerythritol (126-58-9)

Description and Uses

Dipentaerythritol, also known as 2,2-[oxybis(methylene)- bis[2-hydroxymethyl]-1,3-propanediol, is a byproduct of pentaerythritol production. Because of its low solubility in water (0.22 g/ 100 g H2O at 20 ℃ and 10.0 g/100 g H2O at 100 ℃) it can be separated from pentaerythritol by fractional crystallization. The yield can be increased by changing the ratio of formaldehyde/ acetaldehyde towards stoichiometric. Adding pentaerythritol before starting the reaction also increases the yield. An effective method is to use acrolein instead of acetaldehyde. Dipentaerythritol can be produced intentionally from pentaerythritol by acid catalysis. Dipentaerythritol is purified as a coproduct by many pentaerythritol producers.

2,2''-(Oxybis(methylene))bis(2-(hydroxymethyl)-propane-1,3-diol) is used in preparation of new type of explosion-proof and flame-retardant tape material for cables.

Safety

Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P305+P351+P338
Safety Statements  24/25
WGK Germany  1
Autoignition Temperature 370 °C
TSCA  Yes
HS Code  29094919
Hazardous Substances Data 126-58-9(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: > 2000 mg/kg

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