MES, CAS# 4432-31-9, Good's Buffer

You need to upgrade your flash player

MES, Monohydrate

Molecular Fomula: C₆H₁₃NO₄S H₂O
F.W.: 213.25
CAS#: 4432-31-9
pH: 2.5 - 4.5


Bio Industrial	Bio Synthesized	Bio Ultra

Click here for larger Bulk Product selections
In Stock
E-mail this product to an associate

E-mail this product

Select Grade and Size:

Description:
MES is a pH buffering compound selected as one of the Good's buffers that is used as a buffering agent in many biological and biochemical applications. This Good's buffer is useful in maintaining pH. It is not absorbed through cell membranes and is virtually transparent in UV light.

Price Comparison Specifications Product Links

x 100g size

	BioBuffer Solutions	Sigma	Amresco	Research Organics	Calbiochem
Grade	Bio Ultra	BioXtra	Ultra Pure	Molecular Biology	ULTROL®*
Product Code	MES-13	69892	E169	9610M	475893
Assay	99.5% min.	≥99.0%	99.0%	≥99.5%	≥99%
Price	$23.50	$103.00	$68.60	$68.00	$69.00

Grade	Bio Synthesized			Research Organics
Product Code	MES-12			0113M
Assay	99.0% min.			≥99.5%
Price	$20.00			$62.35

Grade	Bio Industrial
Product Code	MES-11
Assay	98.0% min.
Price	$16.50

*ULTROL® is a registered trademark of Calbiochem and EMD Chemicals Inc.

x 250g size

	BioBuffer Solutions	Sigma	Amresco	Research Organics	Calbiochem
Grade	Bio Ultra	BioUltra	Ultra Pure	Molecular Biology
Product Code	MES-13	69889	E169	9610M
Assay	99.5% min.	≥99.5%	99.0%	≥99.5%
Price	$47.00	$518.00	$159.10	$172.82

Grade	Bio Synthesized
Product Code	MES-12
Assay	99.0% min.
Price	$40.00

Grade	Bio Industrial
Product Code	MES-11
Assay	98.0% min.
Price	$33.00

x 500g size

	BioBuffer Solutions	Sigma	Amresco	Research Organics	Calbiochem
Grade	Bio Ultra	BioXtra	Ultra Pure	Research Organics	ULTROL®*
Product Code	MES-13	69892	E169	0113M	475893
Assay	99.5% min.	≥99.0%	99.0%	≥99.5%	≥99.0%
Price	$70.50	$413.00	$278.90	$283.00	$299.00

Grade	Bio Synthesized
Product Code	MES-12
Assay	99.0% min.
Price	$60.00

Grade	Bio Industrial
Product Code	MES-11
Assay	98.0% min.
Price	$49.50

*ULTROL® is a registered trademark of Calbiochem and EMD Chemicals Inc.

MES Monohydrate

(4-Morpholineethanesulfonic acid)

C₆H₁₃NO₄S · H₂0 ^ F.W. 213.25 g/mol ^ CAS# 4432-31-9

Test	Specifications

	Bio Ultra	Bio Synthesized	Bio Industrial
	MES-13	MES-12	MES-11

Manufactured in the USA	Pass
Appearance and Color	White/Crystals	White/Crystals	White/Crystals
pH (0.5M)	2.5-4.5	2.5-4.5
Assay	99.5% min.	99.0% min.	98.0% min.
Identification (IR)	Match Reference	Match Reference	Match Reference
Color (1M, Alkaline)	Clear/Colorless	Clear/Colorless	Clear/Colorless
Solubility (5%)	Clear	Clear
Chloride	0.005% max.
Sulfate	0.005% max.
Absorbance	0.02 max. @ 280	0.02 max. @ 280
	0.02 max. @ 260	0.02 max. @ 260
Loss on Drying	7-10%	7-10%	7-10%
Sodium (Na)	0.005% max.
Potassium (K)	0.005% max.
Arsenic (As)	0.0001% max.
Copper (Cu)	0.0001% max.	0.0005% max.
Iron (Fe)	0.0001% max.
Magnesium (Mg)	0.0001% max.
Lead (Pb)	0.0001% max.	0.0002% max.
Heavy Metals	0.0001% max.
Residue on Ignition	0.05% max.
pH (5%)	3.1-3.3
pK_a	5.9-6.3	5.9-6.3
RNase	None Detected	None Detected
DNase	None Detected	None Detected
Protease	None Detected	None Detected

MES General Information

"Hydrogen Ion Buffers for Biological Research". Biochemistry 5: 467.

Merck Merck 13, 5925

Product	Molecular	CAS #	Details
HEPES, Free Acid	C₈H₁₈N₂O₄S	7365-45-9
MES Na	C₆H₁₂NNaO₄S	71119-23-8
Guanidine Thiocyanate	NH₂C(NH)NH₂ HSCN	593-84-0

Bio Industrial (Good)
Quality tested from approved suppliers of BBS for Industry-Standard use.

Bio Synthesized (Better)
Manufactured in a quality system based facility offering traceability and consistent supply.

Bio Ultra (Best)
Manufactured at BBS to meet the highest quality and regulatory standards.

Categories