1.04219

Guanidinium chloride

for biochemistry

• Synonym(s): Guanidine hydrochloride, Guanidinum hydrochloride, Carbamimidoylazanium chloride, Aminoformamidine hydrochloride, Aminomethanamidine hydrochloride, Guanidinium chloride
• Linear Formula: NH₂C(=NH)NH₂ · HCl
• CAS Number: 50-01-1
• Molecular Weight: 95.53
• Beilstein/REAXYS Number: 3591990
• MDL number: MFCD00013026
• UNSPSC Code: 12352107
• EC Index Number: 200-002-3

Properties

• Quality Level: 100
• potency: 655.3-907.1 mg/kg LD₅₀, oral (Rat); >2000 mg/kg LD₅₀, skin (Rabbit)
• pH: 4.5-5.5 (20 °C, 100 g/L in H₂O)
• mp: 180-185 °C (lit.)
• density: 1.3 g/cm³ (lit.)
• bulk density: 550‑620 kg/m³
• storage temp.: 2-30°C
• SMILES string: Cl[H].NC(N)=N
• InChI: 1S/CH5N3.ClH/c2-1(3)4;/h(H5,2,3,4);1H
• InChI key: PJJJBBJSCAKJQF-UHFFFAOYSA-N

Description

General description

Biological detergent
Agent for reversible denaturation of proteins. Special grade with low optical density for use in procedures where spectrometry is involved.

Application

Strong chaotropic agent useful for the denaturation and subsequent refolding of proteins. This strong denaturant can solubilize insoluble or denatured proteins such as inclusion bodies. This can be used as the first step in refolding proteins or enzymes into their active form. Urea and dithiothreitol (DTT) may also be necessary.

Analysis Note

Assay (Perchloric acid titration, calc. on anhydrous substance): ≥ 99.5 %
Identity (IR-spectrum): passes test
pH (100 g/l, water): 5.5 - 6.5
Melting point: 183 - 188 °C
Absorbance A (235 nm; 50 %; 1 cm; water): ≤ 0,2
Heavy metals (as Pb): ≤ 10 ppm
Fe (Iron): ≤ 5 ppm
Sulfated ash (600 °C): ≤ 0.05 %
Water (according to Karl Fischer): ≤ 1

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H302 + H332 - H315 - H319
• pcodes: P261 - P264 - P301 + P312 - P302 + P352 - P304 + P340 + P312 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_c: Not applicable