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Merck

1.04220

Guanidinium chloride

LAB

Synonym(s):

Guanidine hydrochloride, Guanidinum hydrochloride, Carbamimidoylazanium chloride, Aminoformamidine hydrochloride, Aminomethanamidine hydrochloride, Guanidinium chloride

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About This Item

Linear Formula:
NH2C(=NH)NH2 · HCl
CAS Number:
50-01-1
Molecular Weight:
95.53
UNSPSC Code:
12352107
NACRES:
NA.21
EC Index Number:
200-002-3
MDL number:
MFCD00013026
Beilstein/REAXYS Number:
3591990

Product Name

Guanidinium chloride, LAB

InChI

1S/CH5N3.ClH/c2-1(3)4;/h(H5,2,3,4);1H

SMILES string

Cl[H].NC(N)=N

InChI key

PJJJBBJSCAKJQF-UHFFFAOYSA-N

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.)
188 °C

solubility

2150 g/L

density

1.3 g/cm3 (lit.)

bulk density

550‑620 kg/m3

storage temp.

2-30°C

Quality Level

100

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Analysis Note

Assay (perchloric acid titration): ≥ 99.0 %
Identity (IR-spectrum): passes test
pH-value (10 %; water): 4.5 - 5.5
Melting range: 182 - 186
Chloride (calc. on anhydrous substance): 36.1 - 37.1 %

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.

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

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