Merck
All Photos(1)

1.12186

Supelco

1,1,1,3,3,3-Hexamethyldisilazane

for gas chromatography

Synonym(s):
Bis(trimethylsilyl)amine, HMDS, 1,1,1,3,3,3-Hexamethyldisilazane
Empirical Formula (Hill Notation):
C6H19NSi2
CAS Number:
Molecular Weight:
161.39
MDL number:
EC Index Number:
213-668-5

Quality Level

vapor pressure

20 hPa ( 20 °C)

assay

≥98.5% (GC)

form

liquid

autoignition temp.

325 °C

potency

847 mg/kg LD50, oral (Rat)
550 mg/kg LD50, skin (Rabbit)

expl. lim.

0.8-25.9 % (v/v)

kinematic viscosity

0.9 cSt(25 °C)

bp

126 °C/1013 mbar

mp

-82 °C

transition temp

flash point 15 °C

density

0.78 g/cm3 at 20 °C

storage temp.

2-30°C

InChI

1S/C6H19NSi2/c1-8(2,3)7-9(4,5)6/h7H,1-6H3

InChI key

FFUAGWLWBBFQJT-UHFFFAOYSA-N

Analysis Note

Appearance of substance (colour): colourless
Assay (GC, area%): ≥ 98.5 % (a/a)
Identity (IR): passes test

Pictograms

FlameSkull and crossbones

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 3 - Flam. Liq. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

52.5 °F - closed cup

Flash Point(C)

11.4 °C - closed cup

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