4-Morpholineethanesulfonic Acid CAS 4432-31-9

4-Morpholineethanesulfonic Acid is white crystalline powder, easily soluble in water. As a biological buffer (pH 5.5-7.0), widely used in electrophoresis, cell culture. Its low UV absorption and metal ion compatibility are outstanding. It needs to be kept dry and protected from light and avoid contact with strong oxidizing agents.

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Model:
4432-31-9
Brand:
Futurechemical
Code:
4432-31-9

Product Description

4-Morpholineethanesulfonic acid Basic information
Product Name:	4-Morpholineethanesulfonic acid
CAS:	4432-31-9
MF:	C6H13NO4S
MW:	195.24
EINECS:	224-632-3
Mol File:	4432-31-9.mol
4-Morpholineethanesulfonic acid Chemical Properties
Melting point	>300 °C(lit.)
Boiling point	102°C
density	1.208 (estimate)
refractive index	1.5500 (estimate)
storage temp.	2-8°C
solubility	H2O: 0.5 M at 20 °C, clear
pka	pKa at 0.1M ionic: 0°, 6.38; 20°, 6.15; 37°, 5.98; pKa1 1.99; pKa2 6.21; pKa/°C -0.011
form	Powder
color	White
PH	2.5-4.0 (25℃ in neat)
PH Range	5.5 - 6.7
Water Solubility	185.2g/L at 20℃
λmax	λ: 260 nm Amax: 0.01
λmax	λ: 280 nm Amax: 0.01
Merck	135,929
BRN	6350956
Stability:	Stable. Incompatible with strong oxidizing agents.
InChIKey	SXGZJKUKBWWHRA-UHFFFAOYSA-N
LogP	-2.2 at 20℃
CAS DataBase Reference	4432-31-9(CAS DataBase Reference)
EPA Substance Registry System	4-Morpholineethanesulfonic acid (4432-31-9)

4-Morpholineethanesulfonic Acid CAS 4432-31-9 C6H13NO4S Calcium soap dispersant Phosphate-free detergent Mineral flotation agent Leather degreasing dispersant Dye and pigment wetting agent Printing deinking agent Dishwashing detergent raw material

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.