Pentaerythritol – Product description
Identification
| IUPAC name: | 2,2 Bis-(Hydroxymethyl)1,3 Propanediol |
| Other commercial name: | Tetramethylolmethane |
| CAS number: | 115-77-5 |
| EINECS number: | 204-104-9 |
Physical Chemical Properties
| Chemical formula | (CH2OH)4C |
| Molecular weight | 136.16 |
| Specific gravity | 1.39 g/cm3 |
| Bulk packing density | 0.7 g/cm3 |
| Solubility in 100 g water | at 20°C 7 g at 50°C 17 g at 95°C 72 g |
| Appearance: | white, coarse, free-flowing, crystalline |
Sale specifications
| Guaranteed | Typical | |
| Monopentaerythritol content (1) | min 98.0 wt% | 99.1 wt% |
| Melting point (final) | min 257°C | 260°C |
| Ash content (2) | max 0.005 wt% | 0.003 wt% |
| Phtalic ester color (3) | max 150° APHA | 100°APHA |
| Humidity | max 0.5 wt% | 0.2 wt% |
| (1) gascromatographic analysis on a dry acetylated sample | ||
| (2) as Na2 SO4 | ||
| (3) color of a mixture 1:1 with Phtalic anhydride, after melting for 7 min. at 200°C. | ||
| Typical Grain Size | |
| ø over 0. 5 mm | 10 to 30 % |
| ø between 0.2 and 0.5 mm | 50 to 65 % |
| ø between 0.1 and 0.2 mm | 10 to 25 % |
| ø between 0.06 and 0.1 mm | 1 to 5 % |
| ø under 0.06 mm | 0.5 to 1 % |
Packaging
ALDER pentaerythritol is shipped from the ALDER plant in 25 Kg net weight paper multiwall bags (on 1,250 Kg shrinkwrapped pallets), in 500 or in 1,000 Kg waterproof antistatic big-bags.
Other types of packing may also be employed or shipments may be made in bulk after special agreements have been made.