Water

  • Dihydrogen oxide
  • Ice
  • Steam
Formula
H2O
Structure
Description
Clear, colorless, odorless liquid.
Uses
To many to mention.

Registry Numbers and Inventories.
CAS
7732-18-5
EC (EINECS/ELINCS)
231-791-2
RTECS
ZC0110000
RTECS class
Mutagen; Human Data
Merck
12,10175
Beilstein/Gmelin
117 (G)
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
H2O
Formula mass
18.01
Melting point, °C
0
Boiling point, °C
100
Vapor pressure, mmHg
0.001 (10 C)
Vapor density (air=1)
> 1
Critical pressure
39.6
Density
1.00 g/cm3 (4 C)
Solubility in water
It IS water!
Viscosity
0.01 P (20 C)
Surface tension
72.8 erg/cm2 (20 C)
Refractive index
1.333 (20 C)
Dipole moment
1.85 D
Dielectric constant
80.1
Heat of fusion
6.0 kJ/mol
Heat of vaporization
40.2 kJ/mol

Hazards and Protection.
Storage
No special storage requirements.
Handling
No special handling procedures are required.
Protection
Not required.
Respirators
Respirator protection is not normally required.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container.
Stability
Stable under normal shipping and handling conditions.
Incompatibilities
Moisture sensitive materials.
Decomposition
None.

Fire.
Fire fighting
Not required.
Fire potential
Nonflammable
Hazards
This material only represents a hazard when it comes in contact with water reactive materials.

Health.
Exposure effects
Not considered a health hazard under normal industrial use.
   Ingestion
No hazard expected in normal industrial use.
   Inhalation
No hazard expected in normal industrial use.
   Skin
Non-irritating to the skin.
   Eyes
Non-irritating to the eyes.

First aid
 
   Ingestion
Not required.
   Inhalation
Not required.
   Skin
Not required.
   Eyes
Not required.

Transport.
USCG CHRIS Code
WTR
 
43 Misc. water solutions
HS Code
2851 00 10
 
IMO Chemical Code
18
IMO Pollution Category
III