Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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Diphosphoric acid(2466-09-3)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
Diphosphoric acid
Synonyms
Diphosphoric acid
Pyrophosphate
CAS
2466-09-3
Formula
H4O7P2
Molecular Weight
177.98
EINECS
219-574-0
RTECS
JL6672500
RTECS Class
Other
Merck
12,8191
Beilstein/Gmelin
82619 (G)

Physical and Chemical Properties

Appearance
Odorless, hygroscopic syrupy liquid or a viscous off-white solid
Solubility in water
Very soluble
Melting Point
61
Density
1.75 g/cm3
pKa/pKb
0.99 (pKa)

First Aid Measures

Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician immediately.
Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
Eyes
Assure adequate flushing of the eyes by separating the eyelids with fingers.

Handling and Storage

Storage
Keep tightly closed. Store in a cool dry place.

Hazards Identification

Inhalation
TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
Skin
Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
Eyes
See Inhalation.
Ingestion
See Inhalation.
Hazards
Emits toxic fumes under fire conditions.
EC Risk Phrase
34
EC Safety Phrase
26 36/37/39 45
UN (DOT)
3260

Exposure Controls/Personal Protection

Personal Protection
Wear appropriate government approved respirator, chemical-resistant gloves, safety goggles, other protective clothing. Faceshield (8-inch minimum).
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Exposure Effects
Corrosive. Causes burns.
Poison Class
2

Fire Fighting Measures

Fire Fighting
Extinguish using Dry chemical powder. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Fire Potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Accidental Release Measures

Small spills/leaks
Cover with dry lime or soda ash, pick up, keep in a closed container, and hold for waste disposal. Ventilate area and wash spill site after material pickup is complete.

Stability and Reactivity

Incompatibilities
Strong bases, Strong oxidizing agents.
Decomposition
Thermal decomposition may produce toxic fumes of phosphorus oxides and/or phosphine.
Combustion Products
Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
3260
Hazard Class
8
Packing Group
II
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