Arsenic acid disodium salt
Disodium arsenate
Disodium hydrogen arsenate
AsHNa2O4 / HNa2AsO4
Molecular mass: 185.9
ICSC # 1208
CAS # 7778-43-0
RTECS # CG0875000
UN # 1685
EC # 033-005-00-1
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Not combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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Exposure
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PREVENT DISPERSION OF DUST!
AVOID ALL CONTACT!
AVOID Exposure OF (PREGNANT) WOMEN!
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IN ALL CASES CONSULT A DOCTOR!
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•Inhalation
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Cough.
Headache.
Laboured breathing.
Sore throat.
Weakness.
See Ingestion.
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Closed system and ventilation.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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Redness.
Pain.
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
Refer for medical attention.
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•Eyes
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Redness.
Pain.
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Face shield
or
eye protection in combination with breathing protection.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Abdominal pain.
Burning sensation behind the breastbone and in the mouth.
Diarrhoea.
Vomiting.
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Do not eat, drink, or smoke during work.
Wash hands before eating.
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Rinse mouth.
Give a slurry of activated charcoal in water to drink.
Induce vomiting (ONLY IN CONSCIOUS PERSONS!).
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Chemical protection suit including self-contained breathing apparatus.
Do NOT let this chemical enter the environment.
Vacuum spilled material.
Carefully collect remainder,
then remove to safe place.
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Separated from
acids,
food and feedstuffs
.
Provision to contain effluent from fire extinguishing.
Well closed.
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Unbreakable packaging; put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs.
Marine pollutant.
Note: A, E
T symbol
N symbol
R: 45-23/25-50/53
S: 53-45-60-61
UN Hazard Class: 6.1
UN Packing Group: II
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Important Data
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Physical State; Appearance:
COLOURLESS
TO WHITE
CRYSTALS
OR POWDER.
Physical Dangers:
Chemical Dangers:
Upon heating, toxic fumes are formed.
Reacts withacidsto produce toxic arsine gas (see ICSC 0222).
Attacks many metals in presence of water such as iron, aluminium and zinc, releasing toxic fumes of arsenic and arsine.
Occupational Exposure Limits:
TLV: (as As) 0.01 mg/m3 A1 (confirmed human carcinogen); BEI issued; (ACGIH 2004).
MAK:
Carcinogen category: 1; Germ cell mutagen group: 3A;
(DFG 2004).
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol,
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.
Effects of Short-Term Exposure:
The substance
is irritating to
the eyes
,
the skin
and
the respiratory tract
.
The substance may cause effects on the
gastrointestinal tract
,
cardiovascular system
,
central nervous system
,
kidneys
, resulting in severe gastroenteritis, loss of fluids and electrolytes, cardiac disorders kidney impairment, collapse,
shock
,
and
death
.
Exposure above the OEL may result in death.
The effects may be delayed.
Medical observation is indicated.
Effects of Long-Term or Repeated Exposure:
Repeated or prolonged contact with skin may cause dermatitis.
The substance may have effects on the peripheral nervous system, skin, mucous membranes,
bone marrow
,
kidneys
and
liver
, resulting in neuropathy, pigmentation disorders, perforation of nasal septum,lesions of blood cells,kidney impairment and cirrhosis.
This substance is carcinogenic to humans.
Animal tests show that this substance possibly causes malformations in human babies.
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Physical
Properties
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Melting point: 57°C
Density: 1.87
g/cm3
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Solubility in water, g/100 ml at 15°C: 61
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Environmental
Data
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This substance may be hazardous in the environment; special attention should be given to ground water contamination,aquatic organisms and soil organisms.
This substance does enter the environment under normal use. Great care, however, should be given to avoid any additional release, e.g. through inappropriate disposal.
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N O T E S
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Depending on the degree of exposure, periodic medical examination is suggested.
Do NOT take working clothes home.
Card has been partly updated in April 2005. See sections Occupational Exposure Limits, Emergency Response.October 2005: see section Effects of long-term or repeated exposure.
Transport Emergency Card: TEC (R)-61GT5-II
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ADDITIONAL INFORMATION
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ICSC: 1208
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SODIUM ARSENATE DIBASIC
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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