registration deadline. 
CAS-No.: 12501-23-4 
Relevant identified uses of the substance or mixture and uses advised against 
Identified uses: Laboratory chemicals, Manufacture of substances 

 

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SECTION 2: Hazards identification
Classification of the substance or mixture 
Classification according to Regulation (EC) No 1272/2008 
Skin corrosion (Category 1B), H314 
For the full text of the H-Statements mentioned in this Section, see Section 16. 
Classification according to EU Directives 67/548/EEC or 1999/45/EC 
C CorrosiveR34 
For the full text of the R-phrases mentioned in this Section, see Section 16. 
Label elements 
Labelling according Regulation (EC) No 1272/2008 
Pictogram 
Signal wordDanger 
Hazard statement(s) 
H314Causes severe skin burns and eye damage. 
Precautionary statement(s) 
P280Wear protective gloves/ protective clothing/ eye protection/ face 
protection. 
P305 + P351 + P338IF IN EYES: Rinse cautiously with water for several minutes. Remove 
contact lenses, if present and easy to do. Continue rinsing. 
P310Immediately call a POISON CENTER or doctor/ physician. 
Supplemental Hazardnone 
Statements 
Other hazards - none 

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SECTION 3: Composition/information on ingredients
Substances 
Synonyms: Tungstophosphoric acid 
Formula: H3O40PW12 · xH2O 
Molecular Weight: 2.880,05 g/mol 
CAS-No.: 12501-23-4 
Hazardous ingredients according to Regulation (EC) No 1272/2008 
ComponentClassificationConcentration 
Phosphotungstic acid hydrate 
CAS-No.12501-23-4Skin Corr. 1B; H314<= 100 % 
Hazardous ingredients according to Directive 1999/45/EC 
ComponentClassificationConcentration 
Phosphotungstic acid hydrate 
CAS-No.12501-23-4C, R34<= 100 % 
For the full text of the H-Statements and R-Phrases mentioned in this Section, see Section 16 

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SECTION 4: First aid measures
Description of first aid measures 
General advice 
Consult a physician. Show this safety data sheet to the doctor in attendance. 
If inhaled 
If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician. 
In case of skin contact 
Take off contaminated clothing and shoes immediately. Wash off with soap and plenty of water. Consult a 
physician. 
In case of eye contact 
Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician. 
If swallowed 
Do NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with 
water. Consult a physician. 
Most important symptoms and effects, both acute and delayed 
The most important known symptoms and effects are described in the labelling (see section 2.2) and/or in 
section 11 
Indication of any immediate medical attention and special treatment needed 
no data available 

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SECTION 5: Firefighting measures
Extinguishing media 
Suitable extinguishing media 
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. 
Special hazards arising from the substance or mixture 
Oxides of phosphorus, Tungsten oxide 
Advice for firefighters 
Wear self contained breathing apparatus for fire fighting if necessary. 
Further information 
no data available 

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SECTION 6: Accidental release measures
Personal precautions, protective equipment and emergency procedures 
Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure 
adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. 
For personal protection see section 8. 
Environmental precautions 
Do not let product enter drains. 
Methods and materials for containment and cleaning up 
Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed 
containers for disposal. 
Reference to other sections 
For disposal see section 13. 

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SECTION 7: Handling and storage
Precautions for safe handling 
Avoid formation of dust and aerosols. 
Provide appropriate exhaust ventilation at places where dust is formed.Normal measures for preventive fire 
protection. 
For precautions see section 2.2. 
Conditions for safe storage, including any incompatibilities 
Store in cool place. Keep container tightly closed in a dry and well-ventilated place. 
Specific end use(s) 
Apart from the uses mentioned in section 1.2 no other specific uses are stipulated 

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SECTION 8: Exposure controls/personal protection
Control parameters 
Components with workplace control parameters 
Exposure controls 
Appropriate engineering controls 
Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and 
at the end of workday. 
Personal protective equipment 
Eye/face protection 
Face shield and safety glasses Use equipment for eye protection tested and approved under 
appropriate government standards such as NIOSH (US) or EN 166(EU). 
Skin protection 
Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique 
(without touching glove's outer surface) to avoid skin contact with this product. Dispose of 
contaminated gloves after use in accordance with applicable laws and good laboratory practices. 
Wash and dry hands. 
The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and 
the standard EN 374 derived from it. 
Full contact 
Material: Nitrile rubber 
Minimum layer thickness: 0,11 mm 
Break through time: 480 min 
Material tested:Dermatril® (KCL 740 / Z677272, Size M) 
Splash contact 
Material: Nitrile rubber 
Minimum layer thickness: 0,11 mm 
Break through time: 480 min 
Material tested:Dermatril® (KCL 740 / Z677272, Size M) 
data source: KCL GmbH, D-36124 Eichenzell, phone +49 (0)6659 87300, test method: EN374 
If used in solution, or mixed with other substances, and under conditions which differ from EN 374, 
contact the supplier of the CE approved gloves. This recommendation is advisory only and must 
be evaluated by an industrial hygienist and safety officer familiar with the specific situation of 
anticipated use by our customers. It should not be construed as offering an approval for any 
specific use scenario. 
Body Protection 
Complete suit protecting against chemicals, The type of protective equipment must be selected 
according to the concentration and amount of the dangerous substance at the specific workplace. 
Respiratory protection 
Where risk assessment shows air-purifying respirators are appropriate use a full-face particle 
respirator type N100 (US) or type P3 (EN 143) respirator cartridges as a backup to engineering 
controls. If the respirator is the sole means of protection, use a full-face supplied air respirator. Use 
respirators and components tested and approved under appropriate government standards such 
as NIOSH (US) or CEN (EU). 
Control of environmental exposure 
Do not let product enter drains. 

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SECTION 9: Physical and chemical properties
Information on basic physical and chemical properties 
a) AppearanceForm: crystalline 
Colour: white 
b) Odourno data available 
c) Odour Thresholdno data available 
d) pHno data available 
e) Melting point/freezingMelting point/range: 95 °C - lit. 
point 
f) Initial boiling point and no data available 
boiling range 
g) Flash pointnot applicable 
h) Evapouration rateno data available 
i) Flammability (solid, gas) no data available 
j) Upper/lowerno data available 
flammability or 
explosive limits 
k) Vapour pressureno data available 
l) Vapour densityno data available 
m) Relative densityno data available 
n) Water solubilityno data available 
o) Partition coefficient: n- no data available 
octanol/water 
p) Auto-ignitionno data available 
temperature 
q) Decompositionno data available 
temperature 
r) Viscosityno data available 
s) Explosive propertiesno data available 
t) Oxidizing propertiesno data available 
Other safety information 
no data available 

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SECTION 10: Stability and reactivity
Reactivity 
no data available 
Chemical stability 
Stable under recommended storage conditions. 
Possibility of hazardous reactions 
no data available 
Conditions to avoid 
no data available 
Incompatible materials 
Strong oxidizing agents, Strong bases 
Hazardous decomposition products 
Other decomposition products - no data available 
In the event of fire: see section 5 

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SECTION 11: Toxicological information
Information on toxicological effects 
Acute toxicity 
no data available 
Skin corrosion/irritation 
no data available 
Serious eye damage/eye irritation 
no data available 
Respiratory or skin sensitisation 
no data available 
Germ cell mutagenicity 
no data available 
Carcinogenicity 
IARC:No component of this product present at levels greater than or equal to 0.1% is identified as 
probable, possible or confirmed human carcinogen by IARC. 
Reproductive toxicity 
no data available 
Specific target organ toxicity - single exposure 
no data available 
Specific target organ toxicity - repeated exposure 
no data available 
Aspiration hazard 
no data available 
Additional Information 
RTECS: Not available 
Cough, Shortness of breath, Headache, Nausea, Vomiting 

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SECTION 12: Ecological information
Toxicity 
no data available 
Persistence and degradability 
no data available 
Bioaccumulative potential 
no data available 
Mobility in soil 
no data available 
Results of PBT and vPvB assessment 
PBT/vPvB assessment not available as chemical safety assessment not required/not conducted 
Other adverse effects 
no data available 

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SECTION 13: Disposal considerations
Waste treatment methods 
Product 
Offer surplus and non-recyclable solutions to a licensed disposal company. Contact a licensed 
professional waste disposal service to dispose of this material. Dissolve or mix the material with a 
combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. 
Contaminated packaging 
Dispose of as unused product. 

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SECTION 14: Transport information
UN number 
ADR/RID: 3260IMDG: 3260IATA: 3260 
UN proper shipping name 
ADR/RID: CORROSIVE SOLID, ACIDIC, INORGANIC, N.O.S. (Phosphotungstic acid hydrate) 
IMDG: CORROSIVE SOLID, ACIDIC, INORGANIC, N.O.S. (Phosphotungstic acid hydrate) 
IATA:Corrosive solid, acidic, inorganic, n.o.s. (Phosphotungstic acid hydrate) 
Transport hazard class(es) 
ADR/RID: 8IMDG: 8IATA: 8 
Packaging group 
ADR/RID: IIIMDG: IIIATA: II 
Environmental hazards 
ADR/RID: noIMDG Marine pollutant: noIATA: no 
Special precautions for user 
no data available 

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SECTION 15 - REGULATORY INFORMATION
N/A 
 

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SECTION 16 - ADDITIONAL INFORMATION
N/A