Name:
Sodium arsenite 0.05M (0.1N) Standard Solution for Volumetric
Synonym:
Arsenenous acid, sodium salt
CAS:
7732-18-5
Section 1 - Chemical Product
MSDS Name:Sodium arsenite 0.05M (0.1N) Standard Solution for Volumetric
Synonym:Arsenenous acid, sodium salt
Synonym:Arsenenous acid, sodium salt
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 7732-18-5 | Water | 99.35 | 231-791-2 |
| Hazard Symbols: T Risk Phrases: 45 52/53 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
May cause cancer. Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation. 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. May be absorbed through intact skin.
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:
May cause 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:
Inorganic arsenic compounds may cause skin and lung cancers in humans.
May cause cancer. Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation. 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. May be absorbed through intact skin.
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:
May cause 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:
Inorganic arsenic compounds may cause skin and lung cancers in humans.
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:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
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 immediately.
Inhalation:
Remove from exposure and move to fresh air immediately. Get medical aid.
Notes to Physician:
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
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 immediately.
Inhalation:
Remove from exposure and move to fresh air immediately. 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. Substance is noncombustible.
Extinguishing Media:
For small fires, use water spray, dry chemical, carbon dioxide or chemical foam.
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:
For small fires, use water spray, dry chemical, carbon dioxide or chemical foam.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Provide ventilation. Evacuate unnecessary personnel. U.S. regulations require reporting spills and releases to soil, water and air in excess of reportable quantities.
Control runoff and isolate discharged material for proper disposal.
Do not let this chemical enter the environment.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Provide ventilation. Evacuate unnecessary personnel. U.S. regulations require reporting spills and releases to soil, water and air in excess of reportable quantities.
Control runoff and isolate discharged material for proper disposal.
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. Avoid contact with eyes, skin, and clothing. Avoid breathing spray or mist. Use only with adequate ventilation or respiratory protection.
Storage:
Store in a cool, dry place. Store in a tightly closed container.
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid breathing spray or mist. Use only with adequate ventilation or respiratory protection.
Storage:
Store in a cool, dry place. Store in a tightly closed container.
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# 7732-18-5: 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# 7732-18-5: 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: Liquid
Color: colorless
Odor: Not available.
pH: Not available.
Vapor Pressure: Not applicable.
Viscosity: Not applicable.
Boiling Point: Not available.
Freezing/Melting Point: Not available.
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Soluble.
Specific Gravity/Density: Not available.
Molecular Formula: Solution
Molecular Weight: 129.91
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable. Absorbs carbon dioxide from the air.
Conditions to Avoid:
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:
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# 7732-18-5: ZC0110000 CAS# 7784-46-5: CG3675000 LD50/LC50:
CAS# 7732-18-5: Oral, rat: LD50 = >90 mL/kg.
CAS# 7784-46-5: Oral, rat: LD50 = 41 mg/kg; Skin, rat: LD50 = 150 mg/kg.
Carcinogenicity:
Water - Not listed by ACGIH, IARC, or NTP.
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# 7732-18-5: ZC0110000 CAS# 7784-46-5: CG3675000 LD50/LC50:
CAS# 7732-18-5: Oral, rat: LD50 = >90 mL/kg.
CAS# 7784-46-5: Oral, rat: LD50 = 41 mg/kg; Skin, rat: LD50 = 150 mg/kg.
Carcinogenicity:
Water - Not listed by ACGIH, IARC, or NTP.
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, AQUEOUS SOLUTION
Hazard Class: 6.1
UN Number: 1686
Packing Group: III
IMO
Shipping Name: SODIUM ARSENITE, AQUEOUS SOLUTION
Hazard Class: 6.1
UN Number: 1686
Packing Group: III
RID/ADR
Shipping Name: SODIUM ARSENITE, AQUEOUS SOLUTION
Hazard Class: 6.1
UN Number: 1686
Packing group: III
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
Risk Phrases:
R 45 May cause cancer.
R 52/53 Harmful 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# 7732-18-5: No information available.
CAS# 7784-46-5: 3
Canada
CAS# 7732-18-5 is listed on Canadas DSL List.
CAS# 7784-46-5 is listed on Canadas DSL List.
CAS# 7732-18-5 is not listed on Canadas Ingredient Disclosure List.
CAS# 7784-46-5 is listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7732-18-5 is listed on the TSCA inventory.
CAS# 7784-46-5 is listed on the TSCA inventory.
