1.10110
HEPES
Free Acid
For general questions please contact our Customer Service:
EMD Millipore
290 Concord Road
01821 Billerica, MA
United States
Phone: 781 533-6000
Fax: +49 6151 72 2000
E-mail: Customer.CareDesk@emdchemicals.com
25 May 2012
loading
| Product information | |||
|---|---|---|---|
| Synonyms | 2-[4-(2-Hydroxyethyl)-1-piperazinyl]-ethanesulfonic Acid | ||
| Chemical formula | HOCH2CH2(C4H8N2)CH2CH2SO3H | ||
| Molar mass | 238.30 | ||
| CAS number | 7365-45-9 | ||
| Chemical and physical data | |||
|---|---|---|---|
| Merck USA index | 13 4672 | ||
| Molar mass | 238.30 | ||
| Specifications | |
|---|---|
| Expiration date | Exp 60 months from mfg date |
| Assay (alkalimetric) | 99% min |
| Absorbance (250 nm, 5%, 1 cm, water) | 0.05AU max |
| Biological buffer, pKa at 20°C | 7.55 min |
| Chloride (Cl) | 0.005% max |
| Heavy metals (as Pb) | 0.0005% max |
| Identity (IR-spectrum) | To pass test |
| Loss on drying (105°C) | 0.2% max |
| Sodium (Na) | 0.005% max |
| Sulfate (SO4) | 0.005% max |
