4432-31-9

4432-31-9 structure

Name: MES
Chemical Name: 2-(N-morpholino)ethanesulfonic acid
CAS Number: 4432-31-9
Molecular Formula: C₆H₁₃NO₄S
Molecular Weight: 195.237
Catalog: Surfactant Anionic surfactant Sulfonate type
Create Date: 2018-09-15 14:46:26
Modify Date: 2025-08-19 22:40:33
MES (2-Morpholinoethanesulphonic acid), a zwitterionic buffer, is effective in the pH range of 5.5-7.7. MES, as one of the Good’s buffers, is broadly used to regulate pH value for plants culture medium, reagent solution, and physiological experiments[1][2].

Name	2-(N-morpholino)ethanesulfonic acid
Synonyms	MES HYDRAT 2-Morpholinoethanesulfonic acid MES ANHYDROUS 2-(morpholin-4-yl)ethanesulfonic acid MES,ULTRAPURE mes solution 2-(N-Morpholino)ethanesulfonic acid MOPS solution MFCD00006181 morpholino ethane sulfonic acid MES hydrate 2-(N-Morpholino)ethanesulfonic acid (MES) surfactant MES 2-(4-Morpholinyl)ethanesulfonic acid 2-(4-Morpholino)ethanesulfonic acid MES 4-Morpholineethanesulfonic acid 2-(N-Morpholino)ethanesulfonic acid,4-Morpholineethanesulfonic acid EINECS 224-632-3

Description	MES (2-Morpholinoethanesulphonic acid), a zwitterionic buffer, is effective in the pH range of 5.5-7.7. MES, as one of the Good’s buffers, is broadly used to regulate pH value for plants culture medium, reagent solution, and physiological experiments[1][2].
Related Catalog	Research Areas >> Others Signaling Pathways >> Others >> Others
References	[1]. Kagenishi T, et al. MES Buffer Affects Arabidopsis Root Apex Zonation and Root Growth by Suppressing Superoxide Generation in Root Apex. Front Plant Sci. 2016;7:79. Published 2016 Feb 18. [2]. Mash HE, et al. Complexation of copper by zwitterionic aminosulfonic (good) buffers. Anal Chem. 2003;75(3):671-677.

Density	1.4±0.1 g/cm3
Melting Point	>300 °C(lit.)
Molecular Formula	C₆H₁₃NO₄S
Molecular Weight	195.237
Exact Mass	195.056534
PSA	75.22000
LogP	-2.13
Index of Refraction	1.517
Storage condition	Store at RT.
Stability	Stable. Incompatible with strong oxidizing agents.
Water Solubility	H2O: 0.5 M at 20 °C, clear

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: EESADV Ecotoxicology and Environmental Safety. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1977- Volume(issue)/page/year: 6,149,1982 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X6845 No. of Facilities: 257 (estimated) No. of Industries: 1 No. of Occupations: 6 No. of Employees: 5949 (estimated) No. of Female Employees: 4797 (estimated)

Personal Protective Equipment	Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes	Xi: Irritant;
Risk Phrases	36/37/38
Safety Phrases	S26-S36-S24/25-S22
RIDADR	NONH for all modes of transport
WGK Germany	1
RTECS	QE9104530
HS Code	29349990

3240-94-6

4432-31-9

Literature: Malkiel; Mason Journal of Organic Chemistry, 1943 , vol. 8, p. 199,201

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%