Products > Optimize Reagents > Optimize - Polymers > Polyethylene glycol 4,000
Polyethylene glycol 4,000
Applications
- Crystallization grade Polyethylene glycol 4,000 for formulating screens or for optimization
Features
- Sterile filtered solution
- Formulated in Type 1+ ultrapure water: 18.2 megaohm-cm resistivity at 25°C, < 5 ppb Total Organic Carbon, bacteria free (<1 Bacteria (CFU/ml)), pyrogen free (<0.03 Endotoxin (EU/ml)), RNase-free (< 0.01 ng/mL) and DNase-free (< 4 pg/µL)
Description
Polyethylene glycol 4,000
Synonyms: PEG 4,000
H(OCH2CH2)nOH
Mr 3,500-4,500
CAS Number [25322-68-3]
EC Number 500-038-2
Merck 14,7568
RTECS TQ3500000
MDL Number MFCD00081839
PubChem Substance ID 24890217
Melting point (Starting Material) 58.0-61.0°C
Aldehyde None detected
Peroxide None detected
HR2-529 Measured Conductivity Range: 34.0 - 46.9 µS/cm at 25°C
HR2-529 Measured Refractive Index Range: 1.40172 - 1.40279 at 20°C
Support Material(s)
HR2-605 Polyethylene glycol 4,000 (Flake) SDSCertificate Of Analysis
References
1. McPherson, A. 1976, Crystallization of proteins from polyethylene glcyol. J. Biol. Chem. 251: 6300.
2. Crystal structure of human annexin I at 2.5 A resolution. Weng, X; Luecke, H; Song, IS; Kang, DS; Kim, SH; Huber, R. Protein Sci 2, 448- 458, 1993.
3. Crystallization and preliminary X-ray analysis of CTP:phosphoethanolamine cytidylyltransferase (ECT) from Saccharomyces cerevisiae. J. Ohtsuka, K. Nagata, W. C. Lee, Y. Ono, R. Fukuda, A. Ohta and M. Tanokura. Acta Cryst. (2006). F62, 1003-1005.
