HEPES sodium salt HEPES-NA 75277-39-3

N-(2-hydroxyethyl)piperazine-N'-(2-ethanesulfonic acid), or HEPES, is one of the best buffers for all biological studies. HEPES is a zwitterionic organic chemical buffer at most physiological pHs, which is one of Good's buffer reagents, and has the strongest buffering capacity in the pH range of 6.0-8.5.

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Model:
75277-39-3
Brand:
jnfuchemical
Code:
75277-39-3

Product Description

HEPES sodium salt Basic information
Product Name:	HEPES sodium salt
CAS:	75277-39-3
MF:	C8H19N2NaO4S
MW:	262.3
EINECS:	278-169-7
Mol File:	75277-39-3.mol
HEPES sodium salt Chemical Properties
Melting point	234 °C
density	1.504[at 20℃]
vapor pressure	0Pa at 25℃
storage temp.	room temp
solubility	H2O: 1 M at 20 °C, clear, colorless
form	dry powder
color	White
PH	10.0-12.0 (1M in H2O)
PH Range	6.8 - 8.2
pka	7.5(at 25℃)
biological source	synthetic
Water Solubility	It is soluble in water.
Sensitive	Hygroscopic
Stability:	Stable. Hygroscopic - protect from moisture. Incompatible with strong oxidizing agents.
CAS DataBase Reference	75277-39-3(CAS DataBase Reference)
EPA Substance Registry System	1-Piperazineethanesulfonic acid, 4-(2-hydroxyethyl)-, monosodium salt (75277-39-3)
Absorption	≤0.2 at 260 in H2O at 1M
Absorption	≤0.2 at 280 in H2O at 1M

HEPES sodium salt C8H19N2NaO4S HEPES-NA 75277-39-3

Quality Assurance

Full-Process Quality Control: From incoming raw material inspection to in-process monitoring and final outgoing checks, every batch is inspected at each production stage against strict acceptance standards.
Third-Party Certified & Tested: Our quality management system is certified to ISO 9001, and products are regularly tested by accredited laboratories (e.g. SGS, TÜV). Test reports are available on request.
100% Batch Traceability: Each batch carries a unique lot number that links raw material records, production parameters, and test results, enabling complete traceability from factory to final delivery.
Pre-Shipment Inspection: Every order passes a final pre-shipment inspection, with inspection photos and reports shared before dispatch.

FAQ From Customers

Q1: What is the minimum order quantity?

A: There is no quantity limit for the first sample or trial order. Just tell us the actual quantity you need.
Q2: How can I confirm that the quality meets the requirements?

A: Provide your specifications, and our technical team will check them or customize them for you; we can provide TDS, MSDS, and COA, and accept third-party testing.
Q3: How do you ensure stable quality?

A: We manufacture under an ISO 9001 quality system, test every batch before release, and retain samples for 24 months for traceability.
Q4: Do you provide samples?

A: Yes — Free samples are available; freight is at buyer's expense for express delivery.