Each pouch contains approximately 24.93 g of powder. Therefore, one package of 10 contains approximately 249.3 g of powder in total.
H9897
HEPES hemisodium salt
dry powder
Synonym(s):
4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid hemisodium salt, N-(2-Hydroxyethyl)piperazine-N′-(2-ethanesulfonic acid) hemisodium salt
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About This Item
Empirical Formula (Hill Notation):
C8H17.5N2O4S· 0.5Na
CAS Number:
Molecular Weight:
249.30
UNSPSC Code:
12161700
PubChem Substance ID:
NACRES:
NA.25
Pricing and availability is not currently available.
form
dry powder
Quality Segment
pH
7.0-8.0
useful pH range
6.8-8.2
pKa
7.5
storage temp.
room temp
SMILES string
[Na+].OCCN1CCN(CC1)CCS([O-])(=O)=O
InChI
1S/C8H18N2O4S.Na/c11-7-5-9-1-3-10(4-2-9)6-8-15(12,13)14;/h11H,1-8H2,(H,12,13,14);/q;+1/p-1
InChI key
RDZTWEVXRGYCFV-UHFFFAOYSA-M
Packaging
foil pouches
Preparation Note
Contents of each pouch dissolved in 1 liter deionized water will yield 0.1 M sodium HEPES buffer, pH 7.5 at 25 °C.
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This Item | |||
|---|---|---|---|
| description dry powder | description ≥99% (titration) | description - | description Pharmaceutical Secondary Standard; Certified Reference Material |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 300 |
| form dry powder | form powder | form powder or crystals | form - |
| pH 7.0-8.0 | pH 7.4-7.7 (25 °C, 0.1 M in water) | pH 6.8—8.2 | pH 5.0-6.5 (25 °C, 238 g/L) |
| storage temp. room temp | storage temp. room temp | storage temp. - | storage temp. 2-30°C |
| useful pH range 6.8-8.2 | useful pH range 6.8-8.2 | useful pH range 6.8-8.2 | useful pH range 6.8-8.2 |
| pKa 7.5 | pKa 7.5 | pKa - | pKa - |
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Storage Class
11 - Combustible Solids
WGK
WGK 3
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
Eyeshields, Gloves, type N95 (US)
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