Skip to content

Molekula

HEPES (4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid)

CAS 7365-45-9 C8H18N2O4S MW 238.31 In stock
CoA by batch

Overview

A high-purity buffers supplied by Molekula across research and bulk scale.

Specifications

Property Value
Appearance White free-flowing crystalline powder
Heavy metals ≤5ppm
Identification Conforms to reference
pH 4.8 - 5.6
Loss on Drying ≤0.5%
Chloride (Cl) ≤100ppm
Assay ≥99.5%
Residue on Ignition ≤0.1%
Iron (Fe) ≤5ppm
pKa (@ 20°C) 7.35 - 7.69
A260 (1M water ) ≤0.050
A280 (1M water ) ≤0.050
Endotoxin ( 0.2% solution ) ≤0.1EU/ml
A405 (1M Water) ≤0.015
Solubility 1M water Clear, Colourless solution

Storage & handling

Property Value
Storage Temperature Ambient
Shelf Life 24 months
Acidity Acid

Identification

Property Value
CAS Number 7365-45-9
Molecular Formula C8H18N2O4S
Molecular Weight 238.31
SMILES C1CN(CCN1CCO)CCS(=O)(=O)O
REACH Code Y113
TSCA Listed Yes
HTS Code 2933.59.9500
Tariff Code 2933599590

Safety & GHS

None

Precautionary statements

  • P280 Wear protective gloves/protective clothing/eye protection/face protection

For research and industrial use only

Not for use in food, drugs, household, or in or on humans or animals. Consult the Safety Data Sheet before handling.

Documents

Certificate of Analysis (CoA) by batch

Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.

Pricing & pack sizes

Pack sizes & pricing

Pricing on request — packs available from research to bulk quantities.

Prices exclude VAT/sales tax and shipping. Bulk and custom pack sizes available on request.

Synonyms

No alternate names recorded for this product.

Frequently asked questions

FAQ being prepared for this product. Contact our team for help.

Ready to order or need a custom pack?

Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.

Talk to a chemist
Documents Pricing
Request a quote
Tell us what you need and our sales team will come back with pricing and lead times.
Full name
Email
Product
Quantity
Note