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Sodium hypophosphite
CAS No.: 7681-53-0
Synonyms:
Formula: H2NaO2P
Exact Mass: 87.96900
Molecular Weight: 87.97820
PSA: 49.94000
LogP: 0.08820
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Sodium hypophosphite 7681-53-0 MSDS
Name: Sodium hypophosphite monohydrate Material Safety Data Sheet
Synonym: Phosphinic acid, sodium salt monohydrate; Sodium hypophosphite monohydrate
CAS: 7681-53-0
Section 1 - Chemical Product   MSDS Name:Sodium hypophosphite monohydrate Material Safety Data Sheet
Synonym:Phosphinic acid, sodium salt monohydrate; Sodium hypophosphite monohydrate

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
7681-53-0 Sodium hypophosphite monohydrate 99 unlisted
Hazard Symbols: None Listed.
Risk Phrases: None Listed.

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Hygroscopic (absorbs moisture from the air).
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
Inhalation:
May cause respiratory tract irritation.
Chronic:
No information found.

Section 4 - FIRST AID MEASURES
  Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
  General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. Combustion generates toxic fumes.
Decomposes at high temperatures generating flammable and toxic phosphine gas.
Extinguishing Media:
Use extinguishing media most appropriate for the surrounding fire.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Remove all sources of ignition. Provide ventilation.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Use only with adequate ventilation.
Storage:
Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture. Separate from oxidizing materials.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 7681-53-0: CAS# 10039-56-2: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to minimize contact with skin.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Solid
Color: white
Odor: odorless
pH: 6-8 (5% soln) @ 20C
Vapor Pressure: Negligible
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 90 deg C
Autoignition Temperature: Not available.
Flash Point: Not applicable.
Explosion Limits, lower: N/A
Explosion Limits, upper: N/A
Decomposition Temperature: >90 C
Solubility in water: Soluble.
Specific Gravity/Density: Not available.
Molecular Formula: NaH2PO2.H20
Molecular Weight: 105.99

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures. Thermal decomposition may produce toxic fumes of phosphorous oxides and/or phosphine.
Conditions to Avoid:
High temperatures, dust generation, moisture.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Phosphine, oxides of phosphorus, toxic fumes of sodium oxide, hydrogen gas.
Hazardous Polymerization: Has not been reported.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 7681-53-0: WB5950000 CAS# 10039-56-2: SZ5640000 LD50/LC50:
Not available.
CAS# 10039-56-2: Oral, rat: LD50 = 7640 mg/kg.
Carcinogenicity:
Sodium hypophosphite - Not listed by ACGIH, IARC, or NTP.
Sodium hypophosphite monohydrate - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
 

Section 13 - DISPOSAL CONSIDERATIONS
  Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION
 
IATA
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing Group:
IMO
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing Group:
RID/ADR
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing group:

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: Not available.
Risk Phrases:
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 7681-53-0: 1
CAS# 10039-56-2: 2
Canada
CAS# 7681-53-0 is listed on Canada's DSL List.
CAS# 7681-53-0 is not listed on Canada's Ingredient Disclosure List.
CAS# 10039-56-2 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7681-53-0 is listed on the TSCA inventory.
CAS# 10039-56-2 is not listed on the TSCA inventory.
It is for research and development use only.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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