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密理博,391338,HEPES, Free Acid, ULTROL Grade - CAS 7365-45-9 - Calbiochem
重要规格表
| Empirical Formula | CAS # |
|---|
| C₈H₁₈N₂O₄S
| 7365-45-9
|
| Description
|
| Overview | 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 |
| Catalogue Number | 391338 |
| Brand Family |
Calbiochem®
|
| Synonyms | N-2-Hydroxyethylpiperazine-Nʹ-2-ethanesulfonic Acid |
| Product Information
|
| CAS number | 7365-45-9 |
| Form | White crystalline powder |
| Hill Formula | C₈H₁₈N₂O₄S |
| Chemical formula | C₈H₁₈N₂O₄S |
| PKA | 7.25 - 7.75 at 20°C |
| Structure formula Image |  |
| Quality Level | MQ100
|
| Biological Information
|
| Purity | ≥99% by titration (dry basis) |
| Physicochemical Information
|
| Contaminants | Chloride: ≤0.01%; Sodium: ≤0.1%; Sulfate: ≤0.05% |
| Heavy metals | ≤1 ppm |
| Safety Information according to GHS
|
| RTECS | TL6809000 |
| Safety Information
|
| R Phrase | R: 36/37/38
Irritating to eyes, respiratory system and skin. |
| S Phrase | S: 26-37/39
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
Wear suitable gloves and eye/face protection. |
| Storage and Shipping Information
|
| Ship Code |
Ambient Temperature Only
|
| Toxicity |
Irritant
|
| Storage |
+15°C to +30°C
|
| Do not freeze |
Ok to freeze
|
| Special Instructions | Following reconstitution, store at room temperature (20°C). Stock solutions are stable for up to 6 months at 20°C. |
