Dihydrogen wolframate

Guidance on Safe Use

First-aid measures

Eyes: Rinse with plenty of water and consult a specialist if required.  

Inhalation: Remove to fresh air and consult a physician if required.

Ingestion: Clean mouth with water and drink afterwards plenty of water. Obtain medical attention if required.  

Skin: Wash affected area with soap and water. Consult medical attention if required.  

General advise: After first aid, get appropriate medical attention.  

Most important symptoms and effects, both acute and delayed: In general, metal powders or dust may cause mechanical eye and skin irritation.  Inhalation of powder or dust may cause mild respiratory tract irritation.

Indication of any immediate medical attention and special treatment needed: Non known

Fire-fighting measures

Extinguishing media: Substance is non-flammable. Extinguishing methods depend upon hazards in vicinity.  Use water or dry extinguishing powders, sand, CO2 or other inert material as extinguishing media.  Do not use water if any water-reactive metal powders are nearby.  

Special hazards arising from the substance or mixture: No hazardous decomposition products are known.  

Advice for firefighters: Wear self-contained breathing apparatus and a protective suit.

Accidental release measures

Personal precautions, protective equipment and emergency procedures: Avoid contact with skin, eyes and clothing. Use personal protective equipment as specified in Section 8 of this SDS. Ensure adequate ventilation and avoid formation of dust.

Environmental precautions: Avoid spillage into the environment.

See below for exposure controls and disposal considerations.

Methods and material for containment and cleaning up: Use mechanical handling equipment and avoid dust formation. Fill into labeled, sealable containers and dispose of wastes according to regulations.

Handling and storage

Precautions for safe handling: Ensure adequate ventilation and, if necessary, exhaust ventilation when handling or transferring this substance.  Maintain good housekeeping procedures to prevent accumulation of dust. Avoid inhalation and skin/eye contact. Ensure exposure limits are complied with.

Conditions for safe storage, including any incompatibilities: Store in acceptable tightly closed containers, in a well ventilated area. Store under dry and cool conditions, away from incompatible materials and direct sunlight.

Specific end use(s)

1) Formulation of tungstic acid based catalysts

2) Use of tungstic acid in paint and ceramic glaze production

3) Use of tungstic acid to manufacture ultrafine and tungsten carbide powders

4) Use of tungstic acid to manufacture tungsten trioxide powder

5) Use of tungstic acid based catalysts

6) Use of paint and ceramic glaze containing tungstic acid

7) Use of tungstic acid in research and development

Transport information

Shipping

SpecialProvisions

Shipping

Remarks

Marine transport (UN RTDG/IMDG)

Shipping

Remarks

Shipping

Remarks

SpecialProvisions

Exposure controls / personal protection

Appropriate engineering controls: Engineering controls may include local ventilation systems with dust filters depending on degree of process automation and containment (eg closed vs open processes).

Individual protection measures:

Eye/face protection: Use of safety glasses as appropriate and reasonably necessary, depending on degree of process automation and containment (eg closed vs open processes).

Skin protection: Use of work gloves and work clothes as appropriate and reasonably necessary, depending on degree of process automation and containment (eg closed vs open processes).

Respiratory protection: Use of respiratory protection as appropriate and reasonably necessary, depending on degree of process automation and containment (eg closed vs open processes).  

FACILITY LEVEL ENVIRONMENTAL EMISSIONS/MITIGATION(1)

Environmental exposure controls: Air Emission Controls

RMMs for air (present in >90% of the sites(2) ):

• Fabric or bag filters (reported most common)

• Wet scrubbers (reported second most common)

• Ceramic filters

• Dry or semi-dry scrubbers

• Electrostatic precipitation (not common)

Water Emission Controls

The 50th percentile or reported site-specific removal efficiency for nine sites. RMMs for water (present in >90% of the sites for metal compound production(2) ):

• Chemical precipitation

• Sedimentation

• Filtration

• Electrolysis (not common)

1  Typical RMMs are provided for illustrative purposes and should be applied as appropriate and reasonably necessary to prevent adverse effects, indicated by a risk characterisation ratio (RCR) of less than one, on human health and the environment.  

2   Based on input parameters derived from the Specific Emission Release Categories (spERCs) for metals (ARCHE, 2010), spERC for Manufacture and Recycling of Massive Metal and Metal Powder v.1.2.

Stability and reactivity

Chemical stabiliy: Stable under normal ambient and anticipated storage and handling conditions of temperature and pressure.

Possibility of hazardous reactions: None known

Conditions to avoid: Avoid formation and accumulation of dust.

Incompatible materials: None known

Hazardous decomposition products: None known

Reactivity: No hazardous reactions known

Disposal considerations

Waste treatment methods

FACILITY LEVEL ENVIRONMENTAL EMISSIONS/MITIGATION(1)

Waste Management Controls

Dispose in accordance with local/regional/national/international regulations.  Two options are recommended:

1. Re-use

2. Recycling or other recovery

Wastewater should be processed through a sewage treatment plant (STP) either on-site or off-site.

(1) Typical RMMs are provided for illustrative purposes and should be applied as appropriate and reasonably necessary to prevent adverse effects, indicated by a risk characterisation ratio (RCR) of less than one, on human health and the environment.