Name:
Sodium arsenite powder certified
Synonym:
Arsenenous acid, sodium salt; Sodium metaarsenite; Sodium arsenite; Sodium dioxoarsenate
CAS:
7784-46-5
Section 1 - Chemical Product
MSDS Name:Sodium arsenite powder certified
Synonym:Arsenenous acid, sodium salt; Sodium metaarsenite; Sodium arsenite; Sodium dioxoarsenate
Synonym:Arsenenous acid, sodium salt; Sodium metaarsenite; Sodium arsenite; Sodium dioxoarsenate
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 7784-46-5 | Sodium arsenite | 100 | 232-070-5 |
| Hazard Symbols: T N Risk Phrases: 23/25 45 50/53 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Toxic by inhalation and if swallowed. May cause cancer. Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation. May be fatal if absorbed through the skin.
Exposure to arsenic compounds may produce hyperpigmentation of the skin and hyperkeratoses of plantar and palmar surfaces as well as both primary irritation and sensitization types.
Ingestion:
May be fatal if swallowed. Poison by ingestion. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. All soluble arsenic (As) compounds are considered to be poisonous to humans. Inorganic arsenic is more toxic than organic arsenic.
Organic arsenic is excreted more rapidly than inorganic arsenic.
Arsenic 5+ is excreted more rapidly than arsenic 3+.
Inhalation:
Causes respiratory tract irritation. Inhalation of arsenic compounds may lead to irritation of the respiratory tract and to possible nasal perforation. Long-term exposure to arsenic compounds may produce impairment of peripheral circulation.
Chronic:
Prolonged or repeated skin contact may cause dermatitis. Inorganic arsenic compounds may cause skin and lung cancers in humans.
Toxic by inhalation and if swallowed. May cause cancer. Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation. May be fatal if absorbed through the skin.
Exposure to arsenic compounds may produce hyperpigmentation of the skin and hyperkeratoses of plantar and palmar surfaces as well as both primary irritation and sensitization types.
Ingestion:
May be fatal if swallowed. Poison by ingestion. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. All soluble arsenic (As) compounds are considered to be poisonous to humans. Inorganic arsenic is more toxic than organic arsenic.
Organic arsenic is excreted more rapidly than inorganic arsenic.
Arsenic 5+ is excreted more rapidly than arsenic 3+.
Inhalation:
Causes respiratory tract irritation. Inhalation of arsenic compounds may lead to irritation of the respiratory tract and to possible nasal perforation. Long-term exposure to arsenic compounds may produce impairment of peripheral circulation.
Chronic:
Prolonged or repeated skin contact may cause dermatitis. Inorganic arsenic compounds may cause skin and lung cancers in humans.
Section 4 - FIRST AID MEASURES
Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid.
Skin:
In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Get medical aid immediately. Wash clothing before reuse.
Ingestion:
Call a poison control center. If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.
Skin:
In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Get medical aid immediately. Wash clothing before reuse.
Ingestion:
Call a poison control center. If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.
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. Substance is noncombustible.
Extinguishing Media:
Use agent most appropriate to extinguish fire.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Substance is noncombustible.
Extinguishing Media:
Use agent most appropriate to extinguish 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. Wear a self contained breathing apparatus and appropriate personal protection. (See Exposure Controls, Personal Protection section). Avoid generating dusty conditions. Provide ventilation. Evacuate unnecessary personnel.
U.S. regulations require reporting spills and releases to soil, water and air in excess of reportable quantities. Do not let this chemical enter the environment.
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. Wear a self contained breathing apparatus and appropriate personal protection. (See Exposure Controls, Personal Protection section). Avoid generating dusty conditions. Provide ventilation. Evacuate unnecessary personnel.
U.S. regulations require reporting spills and releases to soil, water and air in excess of reportable quantities. Do not let this chemical enter the environment.
Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Do not get in eyes, on skin, or on clothing. Do not breathe dust. Use only with adequate ventilation or respiratory protection. Change contaminated clothing promptly. Do not take working clothes home.
Storage:
Store in a cool, dry place. Store in a tightly closed container.
Store protected from moisture.
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Do not get in eyes, on skin, or on clothing. Do not breathe dust. Use only with adequate ventilation or respiratory protection. Change contaminated clothing promptly. Do not take working clothes home.
Storage:
Store in a cool, dry place. Store in a tightly closed container.
Store protected from moisture.
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 general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits. See 29CFR 1910.1018 for regulatory requirements pertaining to all occupational exposures to inorganic arsenic.
Exposure Limits CAS# 7784-46-5: United Kingdom, WEL - TWA: (listed as arsenic compounds, n.o.s.): mg/m3 TWA (except arsine, as As) United Kingdom, WEL - STEL: (listed as arsenic compounds, n.o.s.) 0.3 mg/m3 STEL (except arsine, as As) United States OSHA: 0.5 mg/m3 TWA (listed under Arsenic).5 ??g/m3 Action Level (as As); 10 ??g/m3 PEL (as As. Cancer hazard - see 2 CFR 1 910.1018. Arsine excepted) (listed under Arsenic, inorgani compounds).
Belgium - TWA: (listed as arsenic): 0.01 mg/m3 VLE Japan: (listed as arsenic compounds, n.o.s.): 3 ??g/m3 OEL (refere value, as As) Malaysia: (listed as arsenic): 0.01 mg/m3 TWA Netherlands: (listed as arsenic, inorganic compounds): 0.1 mg/m3 (as As) Netherlands: (listed as arsenic): 0.050 mg/m3 MAC Russia: (listed as arsenic, inorganic compounds): 0.04 mg/m3 TWA As) Russia: (listed as arsenic, inorganic compounds): 0.01 mg/m3 STEL As) Spain: (listed as arsenic compounds, n.o.s.): 0.1 mg/m3 VLA-ED (a As) Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
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.
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits. See 29CFR 1910.1018 for regulatory requirements pertaining to all occupational exposures to inorganic arsenic.
Exposure Limits CAS# 7784-46-5: United Kingdom, WEL - TWA: (listed as arsenic compounds, n.o.s.): mg/m3 TWA (except arsine, as As) United Kingdom, WEL - STEL: (listed as arsenic compounds, n.o.s.) 0.3 mg/m3 STEL (except arsine, as As) United States OSHA: 0.5 mg/m3 TWA (listed under Arsenic).5 ??g/m3 Action Level (as As); 10 ??g/m3 PEL (as As. Cancer hazard - see 2 CFR 1 910.1018. Arsine excepted) (listed under Arsenic, inorgani compounds).
Belgium - TWA: (listed as arsenic): 0.01 mg/m3 VLE Japan: (listed as arsenic compounds, n.o.s.): 3 ??g/m3 OEL (refere value, as As) Malaysia: (listed as arsenic): 0.01 mg/m3 TWA Netherlands: (listed as arsenic, inorganic compounds): 0.1 mg/m3 (as As) Netherlands: (listed as arsenic): 0.050 mg/m3 MAC Russia: (listed as arsenic, inorganic compounds): 0.04 mg/m3 TWA As) Russia: (listed as arsenic, inorganic compounds): 0.01 mg/m3 STEL As) Spain: (listed as arsenic compounds, n.o.s.): 0.1 mg/m3 VLA-ED (a As) Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
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 to gray white
Odor: odorless
pH: basic in solution
Vapor Pressure: Not applicable.
Viscosity: Not applicable.
Boiling Point: Decomposes
Freezing/Melting Point: 615 deg C
Autoignition Temperature: Not available.
Flash Point: Not applicable.
Explosion Limits, lower: N/A
Explosion Limits, upper: N/A
Decomposition Temperature: Not available.
Solubility in water: Soluble.
Specific Gravity/Density: 1.87
Molecular Formula: NaAsO2
Molecular Weight: 129.91
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable. Absorbs carbon dioxide from the air.
Conditions to Avoid:
Moisture, extreme temperatures.
Incompatibilities with Other Materials:
Strong acids.
Hazardous Decomposition Products:
Oxides of arsenic.
Hazardous Polymerization: Has not been reported
Stable. Absorbs carbon dioxide from the air.
Conditions to Avoid:
Moisture, extreme temperatures.
Incompatibilities with Other Materials:
Strong acids.
Hazardous Decomposition Products:
Oxides of arsenic.
Hazardous Polymerization: Has not been reported
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 7784-46-5: CG3675000 LD50/LC50:
CAS# 7784-46-5: Oral, rat: LD50 = 41 mg/kg; Skin, rat: LD50 = 150 mg/kg.
Carcinogenicity:
Sodium arsenite - California: carcinogen, initial date 2/27/87 (listed as Arsenic, inorg NTP: Known carcinogen (listed as Arsenic, inorganic compounds).
IARC: Group 1 carcinogen (listed as Arsenic).
Other:
See actual entry in RTECS for complete information.
CAS# 7784-46-5: CG3675000 LD50/LC50:
CAS# 7784-46-5: Oral, rat: LD50 = 41 mg/kg; Skin, rat: LD50 = 150 mg/kg.
Carcinogenicity:
Sodium arsenite - California: carcinogen, initial date 2/27/87 (listed as Arsenic, inorg NTP: Known carcinogen (listed as Arsenic, inorganic compounds).
IARC: Group 1 carcinogen (listed as Arsenic).
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Ecotoxicity:
Arsenic compounds tend to be accumulated by oysters and other shellfish.
Arsenic compounds tend to be accumulated by oysters and other shellfish.
Section 13 - DISPOSAL CONSIDERATIONS
Products which are considered hazardous for supply are classified as Special Waste and the disposal of such chemicals is covered by regulations which may vary according to location. Contact a specialist disposal company or the local waste regulator for advice. Empty containers must be decontaminated before returning for recycling.
Section 14 - TRANSPORT INFORMATION
IATA
Shipping Name: SODIUM ARSENITE, SOLID
Hazard Class: 6.1
UN Number: 2027
Packing Group: II
IMO
Shipping Name: SODIUM ARSENITE, SOLID
Hazard Class: 6.1
UN Number: 2027
Packing Group: II
RID/ADR
Shipping Name: SODIUM ARSENITE, SOLID
Hazard Class: 6.1
UN Number: 2027
Packing group: II
USA RQ: CAS# 7784-46-5: 1 lb final RQ; 0.454 kg final RQ
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T N
Risk Phrases:
R 45 May cause cancer.
R 23/25 Toxic by inhalation and if swallowed.
R 50/53 Very toxic to aquatic organisms, may cause
long-term adverse effects in the aquatic environment.
Safety Phrases:
S 20/21 When using do not eat, drink or smoke.
S 28 After contact with skin, wash immediately
with...
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
S 60 This material and its container must be
disposed of as hazardous waste.
S 61 Avoid release to the environment. Refer to
special instructions/safety data sheets.
WGK (Water Danger/Protection)
CAS# 7784-46-5: 3
Canada
CAS# 7784-46-5 is listed on Canadas DSL List.
CAS# 7784-46-5 is listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7784-46-5 is listed on the TSCA inventory.
