What is the CAS number for N-Ethylmaleimide?

The CAS (Chemical Abstracts Service) registry number for N-Ethylmaleimide is 128-53-0. This unique identifier is used worldwide to identify this chemical substance.

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N-Ethylmaleimide

Name: N-Ethylmaleimide
Brand: Tech Serve Solutions
SKU: 128-53-0
Availability: InStock

CAS Number128-53-0

FormulaC6H7NO2

Mol. Weight125.13 g/mol

N-Ethylmaleimide

What is N-Ethylmaleimide?

N-Ethylmaleimide is a chemical compound with CAS number 128-53-0 and molecular formula C6H7NO2. It is used in various industrial and research applications.

Applications

Reagent for the covalent modification of cysteine residues in proteins.

Specifications

Molecular Weight

125.13 g/mol

Assay/Purity

≥98% (HPLC)

Impurities

≤0.001% Phosphorus (P)
≤0.1% Insoluble matter

Boiling Point

210 °C(lit.)

Solubility

95% ethanol: soluble50 mg/mL, clear to slightly hazy (colorless to faint yellow)

Safety Information

GHS05

GHS06

Signal Word

Danger

Hazard Statements

H300-H311-H314-H317

Precautionary Statements

P264-P280-P301 + P310-P305 + P351 + P338-P310

Required PPE

Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges

Melting Point

43-46 °C(lit.)

Ignition Residue

≤0.1%

Anion Traces

chloride (Cl-): ≤0.05%
sulfate (SO42-): ≤0.05%

Cation Traces

Al: ≤0.0005%
Ca: ≤0.0005%
Cu: ≤0.0005%
Fe: ≤0.0005%
K: ≤0.005%
Mg: ≤0.0005%
Na: ≤0.005%
Pb: ≤0.001%
Zn: ≤0.0005%

EC Number

204-892-4

WGK Germany

N-Ethylmaleimide

N-Ethylmaleimide

What is N-Ethylmaleimide?

Applications

Specifications

Safety Information

Frequently Asked Questions