HEPES
HEPES (CAS 7365-45-9), molecular formula C8H18N2O4S, is a high-purity chemical supplied by Tech Serve Solutions for biochemicals & reagents applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- 4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid,N-(2-Hydroxyethyl)piperazine-N′-(2-ethanesulfonic acid)

| Molecular weight | 238.30 |
|---|---|
| Empirical formula | C8H18N2O4S |
| Assay | ≥99.5% (titration) |
| Density | 1.07 g/mL at 20 °C |
| Solubility | H2O: soluble1 M at 20 °C, clear, colorless |
| pH | 5.0-6.5 (25 °C, 1 M in H2O) |
| Concentration | 1 M in H2O238 g/L HEPES in H2O |
| Loss on drying | ≤0.5% loss on drying, 110 °C |
| Impurities tested | DNases, none detectedRNases, none detectedinsoluble matter, passes filter testphosphatases, none detectedproteases, none detected |
| Suitability | suitable for mouse embryo cell culture |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 1 |
| Anion traces | chloride (Cl-): ≤50 mg/kgsulfate (SO42-): ≤50 mg/kg |
| Ignition residue | ≤0.1% (as SO4) |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Quality Level | ELITE |
|---|---|
| Pka 25 °C | 7.5 |
| Market Segment | Diagnostic Assay Manufacturing |
| Uv Absorption | λ: 260 nm Amax: 0.045λ: 280 nm Amax: 0.035 |
| Absorption | A33%/290, H2O ≤0.05 |
| Sterility | 0.2 μm filtered |
| Useful Ph Range | 6.8 - 8.2 |
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is HEPES?
+
HEPES (CAS 7365-45-9), molecular formula C8H18N2O4S, is a high-purity chemical supplied by Tech Serve Solutions for biochemicals & reagents applications, to USP, BP and EP standards.
What grades of HEPES does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies HEPES in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of HEPES?
+
HEPES has CAS number 7365-45-9 and molecular formula C8H18N2O4S. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for HEPES?
+
Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
+
Yes. Every batch of HEPES ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should HEPES be stored?
+
Store HEPES in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is HEPES used for?
+
HEPES is used in biochemicals & reagents applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for HEPES?
+
Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
▶ Related products
![(±)-(E)-4-Ethyl-2-[(E)-hydroxyimino]-5-nitro-3-hexenamide](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F138472-01-2.png&w=3840&q=75)
(±)-(E)-4-Ethyl-2-[(E)-hydroxyimino]-5-nitro-3-hexenamide
C8H13N3O4
Biochemicals & Reagents![(±)-(E)-4-Ethyl-2-[(Z)-hydroxyimino]-5-nitro-3-hexen-1-yl-nicotinamide](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F162626-99-5.png&w=3840&q=75)
(±)-(E)-4-Ethyl-2-[(Z)-hydroxyimino]-5-nitro-3-hexen-1-yl-nicotinamide
C14H18N4O4
Biochemicals & Reagents
(±)-2,5-Dimethoxy-4-bromoamphetamine hydrobromide
Biochemicals & Reagents

(±)-2-(p-Methoxyphenoxy)propionic acid
C10H12O4
Biochemicals & Reagents
(±)-2-Amino-6,7-dihydroxy-1,2,3,4-tetrahydronaphthalene hydrobromide
2
Biochemicals & Reagents
(±)-2-Hydroxydecanoic acid
C10H20O3
Biochemicals & Reagents
(±)-3-Hydroxydecanoic acid
C10H20O3
Biochemicals & Reagents
(±)-3-Hydroxyoctanoic acid
C8H16O3
Biochemicals & Reagents


