HEPES, Free Acid, ULTROL Grade - CAS 7365-45-9 - Calbiochem
HEPES, Free Acid, ULTROL Grade - CAS 7365-45-9 - Calbiochem
A zwitterionic N-substituted aminosulfonic acid buffer. Useful in the pH 6.8-8.2 range. Has a pKa of 7.48 at 25°C.
Absorbance (1.0 M, H2O, 260 nm):≤0.05.
Absorbance (1.0 M, H2O, 280 nm): ≤0.04
包装
1 kg in Glass bottle
25 g in Plastic ampoule
100, 500 g in Glass bottle
5 kg in Fibre carton
Warning
Toxicity: Irritant (B)
Reconstitution
Following reconstitution, store at room temperature (20°C). Stock solutions are stable for up to 6 months at 20°C.
性质
Quality Level | 100 |
assay | ≥99% dry basis (titration) |
form | crystalline powder |
mfr. no. | Calbiochem® |
storage condition | OK to freeze |
storage conditions | +15C to +30C |
color | white |
useful pH range | 6.8 - 8.2 |
pKa (25 °C) | 7.5 |
solubility | water: 1 M |
anion traces | chloride (Cl-): ≤0.01% |
sulfate (SO42-): ≤0.05% | |
cation traces | Na: ≤0.1% |
heavy metals: ≤1 ppm | |
shipped in | ambient |
SMILES string | OCCN1CCN(CC1)CCS(O)(=O)=O |
InChI | 1S/C8H18N2O4S/c11-7-5-9-1-3-10(4-2-9)6-8-15(12,13)14/h11H,1-8H2,(H,12,13,14) |
InChI key | JKMHFZQWWAIEOD-UHFFFAOYSA-N |
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