Merck
All Photos(1)

1.04343

Supelco

Methenamine

GR for analysis Reag. Ph Eur

Synonym(s):
Methenamine, Hexamethylenetetramine, Hexamine, Formin, Urotropin
Empirical Formula (Hill Notation):
C6H12N4
CAS Number:
Molecular Weight:
140.19
MDL number:
EC Index Number:
202-905-8

Agency

reag. Ph. Eur.

Quality Level

vapor pressure

<0.01 hPa ( 20 °C)

assay

≥99.5% (perchloric acid titration)

form

solid

autoignition temp.

390 °C

potency

9200 mg/kg LD50, oral (Rat)

pH

7-10 (20 °C, 100 g/L in H2O)

transition temp

flash point 250 °C

density

1.33 g/cm3 at 20 °C

bulk density

600 kg/m3

storage temp.

15-25°C

InChI

1S/C6H12N4/c1-7-2-9-4-8(1)5-10(3-7)6-9/h1-6H2

InChI key

VKYKSIONXSXAKP-UHFFFAOYSA-N

Analysis Note

Assay (perchloric acid titration): ≥ 99.5 %
Identity (IR-spectrum): passes test
Appearance: colorless or white to almost white crystalline powder
pH (100 g/l, water): 7.0 - 10.0
Chloride (Cl): ≤ 20 ppm
Sulphate (SO₄): ≤ 50 ppm
Heavy metals (as Pb): ≤ 10 ppm
NH₄ (Ammonium): ≤ 100 ppm
Sulfated ash (800 °C): ≤ 0.05 %

Pictograms

FlameExclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Flam. Sol. 2 - Skin Sens. 1B

Storage Class Code

4.1B - Flammable solid hazardous materials

WGK

WGK 1

Flash Point(F)

482.0 °F - closed cup

Flash Point(C)

250 °C - closed cup

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