Hemin manufacturers and suppliers

Hemin suppliers

Properties

Melting point:: 300 °C

storage temp.: 2-8°C

solubility: 1.4 M NaOH: soluble25mg/mL

form: crystal

color: black

Water Solubility: practically insoluble

Merck: 14,4644

BRN: 5229914

Exposure limits: ACGIH: TWA 1 mg/m3
NIOSH: TWA 1 mg/m3

Stability:: Stable. Incompatible with strong oxidizing agents. Combustible.

InChIKey: BTIJJDXEELBZFS-HXFTUNQESA-K

SMILES: [Cl-][Fe+3]123[N-]4C5C(C)=C(C=C)C4=CC4C(C)=C(C=C)C(=CC6=C(C)C(CCC(=O)[O-])=C(C=C7C(CCC(=O)[O-])=C(C)C(C=5)=N17)[N-]26)N3=4.[H+]

Safety Information

Symbol(GHS): GHS08

Signal word: Warning

Hazard statements: H334

Precautionary statements: P261-P285-P304+P341-P342+P311-P403-P501c

Hazard Codes: Xi

Risk Statements: 36/37/38

Safety Statements: 24/25-22-36-26

WGK Germany: 3

RTECS: LJ8080000

F: 8

TSCA: Yes

HS Code: 29349990

Use

Hemin is purified by recrystallisation from AcOH. Also, hemin (5g) is shaken in pyridine (25mL) till it dissolves, then CHCl3 (40mL) is added, the container is stoppered and shaken for 5minutes (releasing the stopper occasionally). The solution is filtered under slight suction, and the flask and filter are washed with a little CHCl3 (15mL). During this period, AcOH (300mL) is heated to boiling, and saturated aqueous NaCl (5mL) and conc HCl (4mL) are added. The CHCl3 filtrate is poured in a steady stream, with stirring, into the hot AcOH mixture and set aside for 12hours. The crystals are filtered off, washed with 50% aqueous AcOH (50mL), H2O (100mL), EtOH (25mL), Et2O and dried in air. [Fischer Org Synth Coll Vol III 442 1955, Beilstein 26 III/IV 3048.]

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