Formula:
CAS#:
RTECS#:
IDLH:
NaOH
1310-73-2
WB4900000 10 mg/m3
Conversion:
DOT: 1823 154 (dry, solid); 1824 154 (solution)
Synonyms/Trade Names: Caustic soda, Lye, Soda lye, Sodium hydrate
Exposure Limits:
Measurement Methods
NIOSH REL: C 2 mg/m3
(see Table 1):
3
NIOSH 7401
OSHA PEL†: TWA 2 mg/m
Physical Description: Colorless to white, odorless solid (flakes, beads, granular
form).
Respirator Recommendations
Personal Protection/Sanitation
Chemical & Physical Properties:
(see Tables 3 and 4):
(see Table 2):
MW: 40.0
NIOSH/OSHA
Skin: Prevent skin contact
BP: 2534°F
10 mg/m3: Sa:Cf£/100F/PaprHie£/
Eyes: Prevent eye contact
Sol: 111%
Wash skin: When contam
Fl.P: NA
ScbaF/SaF
Remove: When wet or contam
IP: NA
§: ScbaF:Pd,Pp/SaF:Pd,Pp:AScba
Change: Daily
Sp.Gr: 2.13
Escape: 100F/ScbaE
Provide: Eyewash
VP: 0 mmHg (approx)
MLT: 605°F
Quick drench
UEL: NA
LEL: NA
Noncombustible Solid, but when in
contact with water may generate
sufficient heat to ignite combustible
materials.
Incompatibilities and Reactivities: Water; acids; flammable liquids; organic halogens; metals such as aluminum,
tin & zinc; nitromethane [Note: Corrosive to metals.]
Exposure Routes, Symptoms, Target Organs (see Table 5): First Aid (see Table 6):
ER: Inh, Ing, Con
Eye: Irr immed
SY: Irrit eyes, skin, muc memb; pneu; eye, skin burns; temporary Skin: Water flush immed
Breath: Resp support
loss of hair
Swallow: Medical attention immed
TO: Eyes, skin, resp sys
Sodium hydroxide
Formula:
CAS#:
RTECS#:
IDLH:
Na2S2O5
7681-57-4
UX8225000
N.D.
Conversion:
DOT:
Synonyms/Trade Names: Disodium pyrosulfite, Sodium metabisulphite, Sodium pyrosulfite
Measurement Methods
Exposure Limits:
(see Table 1):
NIOSH REL: TWA 5 mg/m3
NIOSH 0500
OSHA PEL†: none
Physical Description: White to yellowish crystals or powder with an odor of sulfur dioxide.
Respirator Recommendations
Personal Protection/Sanitation
Chemical & Physical Properties:
(see Tables 3 and 4):
(see Table 2):
MW: 190.1
Skin: N.R.
BP: Decomposes
Not available.
Eyes: N.R.
Sol: 54%
Wash skin: N.R.
Fl.P: NA
Remove: N.R.
IP: NA
Change: N.R.
Sp.Gr: 1.4
VP: ?
MLT: >302°F (Decomposes)
UEL: NA
LEL: NA
Noncombustible Solid
Incompatibilities and Reactivities: Heat (decomposes)
[Note: Slowly oxidized to the sulfate on exposure to air & moisture.]
Exposure Routes, Symptoms, Target Organs (see Table 5): First Aid (see Table 6):
Eye: Irr immed
ER: Inh, Ing, Con
Breath: Fresh air
SY: Irrit eyes, skin, muc memb
Swallow: Medical attention immed
TO: Eyes, skin, resp sys
Sodium metabisulfite
S
284