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Chemical Datasheet
SODIUM HYPOCHLORITE |
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Chemical Identifiers
| CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
- 7681-52-9
- 10022-70-5 (pentahydrate)
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| NIOSH Pocket Guide |
International Chem Safety Card |
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none
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- SODIUM HYPOCHLORITE (SOLUTION, ACTIVE CHLORINE <10%)
- SODIUM HYPOCHLORITE (SOLUTION, ACTIVE CHLORINE >10%)
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NFPA 704
data unavailable
General Description
Colorless or slightly yellow watery liquid with an odor of household bleach. Mixes with water. (USCG, 1999)
Hazards
Reactivity Alerts
Air & Water Reactions
Water soluble. Decomposes into chlorine and oxygen gases in hot water.
Fire Hazard
Special Hazards of Combustion Products: Store in a cool, dark place, away from combustible materials. Emits chlorine gas when burned.
Behavior in Fire: May decompose, generating irritating chlorine gas. (USCG, 1999)
Health Hazard
INHALATION: Will produce severe bronchial irritation and pulmonary edema. INGESTION: burning of mouth, nausea and vomiting, delirium, coma. EYES & SKIN: can be irritating if contact is maintained. (USCG, 1999)
Reactivity Profile
Salts of hypochlorous acid, HClO. Generally toxic, irritants and powerful oxidizers, particularly in the presence of water or at higher temperature as they decompose to release oxygen and chlorine gases. On contact with urea they form the highly explosive NCl3. When heated or on contact with acids, they produce highly toxic fumes of chlorine gas [Sax, 9th ed., 1996, p. 1905]. Can react with sulfuric acid to produce heat and chlorine gas.
Belongs to the Following Reactive Group(s)
- Salts, Basic
- Oxidizing Agents, Strong
- Water and Aqueous Solutions
Potentially Incompatible Absorbents
Use caution: Liquids with this reactive group classification have been
known to react with the
absorbents
listed below.
- Cellulose-Based Absorbents
- Expanded Polymeric Absorbents
Response Recommendations
Isolation and Evacuation
Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.
FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)
Firefighting
Fire Extinguishing Agents Not to Be Used: Amines and oxidizable material such as oxalic acid. May produce explosive chloroamines with amines.
Fire Extinguishing Agents: Chemical, CO2, foam, or water in flooding quantities. (USCG, 1999)
Non-Fire Response
Neutralizing Agents for Acids and Caustics: Sodium disulfite; hypo isulfite. (USCG, 1999)
Protective Clothing
Rubber gloves, goggles, self-contained breathing apparatus, plastic coveralls and boots. (USCG, 1999)
DuPont Tychem速 Suit Fabrics
Normalized Breakthrough Times (in Minutes)
| Chemical |
CAS Number |
State |
QS |
QC |
SL |
C3 |
TF |
TP |
RC |
TK |
RF |
| Sodium hypochlorite (15%) |
7681-52-9 |
Liquid |
>480 |
>480 |
>480 |
>480 |
>480 |
>480 |
>480 |
>480 |
>480 |
| Sodium hypochlorite (5.25-6%) |
7681-52-9 |
Liquid |
|
>480 |
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Special Warning from DuPont: Tychem速 and Tyvek速 fabrics should not be
used around heat, flames, sparks or in potentially flammable or
explosive environments. Only...
(DuPont, 2024)
First Aid
INHALATION: Sips of milk or other demulcent.
EYES: Flush with plenty of water for 15 minutes.
SKIN: Wash contaminated area with soap and water.
INGESTION: Induce vomiting, give water. (USCG, 1999)
Physical Properties
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: data unavailable
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity:
1.093
for 5% solution
(USCG, 1999)
- Denser than water; will sink
Boiling Point: data unavailable
Molecular Weight:
74.44
(USCG, 1999)
Water Solubility: data unavailable
Ionization Energy/Potential: data unavailable
IDLH: data unavailable
AEGLs (Acute Exposure Guideline Levels)
No AEGL information available.
ERPGs (Emergency Response Planning Guidelines)
No ERPG information available.
PACs (Protective Action Criteria)
| Chemical |
PAC-1 |
PAC-2 |
PAC-3 |
| Sodium hypochlorite (7681-52-9)
|
0.5 ppm |
2 ppm |
20 ppm |
| Sodium hypochlorite pentahydrate (10022-70-5)
|
0.66 ppm |
7.2 ppm |
43 ppm |
(DOE, 2024)
Regulatory Information
EPA Consolidated List of Lists
| Regulatory Name |
CAS Number/
313 Category Code |
EPCRA 302
EHS TPQ |
EPCRA 304
EHS RQ |
CERCLA RQ |
EPCRA 313
TRI |
RCRA
Code |
CAA 112(r)
RMP TQ |
| Sodium hypochlorite |
10022-70-5 |
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100 pounds |
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| Sodium hypochlorite |
7681-52-9 |
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100 pounds |
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(EPA List of Lists, 2024)
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
No regulatory information available.
OSHA Process Safety Management (PSM) Standard List
No regulatory information available.
Alternate Chemical Names
- ANTIFORMIN
- B-K LIQUID
- BLEACH
- CARREL-DAKIN SOLUTION
- CHLOROS
- CLOROX
- DAKIN'S SOLUTION
- DEOSAN
- HYCLORITE
- HYPURE
- HYPURE N
- JAVEL WATER
- JAVELLE WATER
- JAVEX
- KLOROCIN
- MILTON
- MODIFIED DAKIN'S SOLUTION
- NEO-CLEANER
- NEOSEPTAL CL
- PAROZONE
- PURIN B
- SODIUM HYPOCHLORITE
- SODIUM HYPOCHLORITE (NACLO)
- SODIUM HYPOCHLORITE (NAOCL)
- SODIUM HYPOCHLORITE SOLUTION
- SOLUTIONS, DAKIN'S
- SUNNYSOL 150
- XY 12