Product Identification

Product Name

Calcium dihydrogenphoshate

Synonyms

Calcium biphosphate
Calcium dihydrogen orthophosphate
Calcium dihydrogen phosphate
Calcium diorthophosphate
Calcium phosphate monobasic
Calcium superphosphate

CAS

7758-23-8

Formula

CaH4O8P2

Molecular Weight

234.05

EINECS

231-837-1

RTECS

TB8527000

RTECS Class

Drug

Merck

12,1740

Beilstein/Gmelin

45081 (G)

Physical and Chemical Properties

Appearance

Shining triclinic plates, crystalline powder or granules.

Solubility in water

moderately soluble

Density

2.22 g/cm3 (20 C)

Usage

In fertilizers, acidulant in baking powder & wheat flours, in enameling, mineral supplement for foods & feeds.

First Aid Measures

Ingestion

First aid is not normally required. If symptoms develop, seek medical attention.

Inhalation

If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.

Skin

Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.

Eyes

Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Handling and Storage

Storage

Keep tightly closed in a cool place in a tightly closed container.

Handling

Containers of this material may be hazardous when emptied. Since emptied containers retain product residues (vapor, liquid, and/or solid), all hazard precautions given in the data sheet must be observed.

Hazards Identification

Inhalation

Respiratory tract irritation and coughing may develop. Aspiration pneumonitis has occurred.

Skin

Dermal irritation or burns may develop.

Eyes

Can cause permanent eye injury. Symptoms include stinging, tearing, redness, and swelling of eyes. Can injure the cornea and cause blindness.

Ingestion

Irritation or burns of the oropharynx, esophagus, or gi tract may occur following ingestion. Nausea, vomiting, abdominal pain, hematemesis, bloody diarrhea, and perforation with severe burns may be noted.

Exposure Controls/Personal Protection

Personal Protection

Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.

Respirators

If workplace exposure limit(s) of product or any component is exceeded (see exposure guidelines), a NIOSH/MSHA approved air supplied respirator is advised in absence of proper environmental control. OSHA regulations also permit other NIOSH/MSHA respirators (negative pressure type) under specified conditions (see your industrial hygienist). Engineering or administrative controls should be implemented to reduce exposure.

Exposure Effects

Symptoms of exposure to this material through breathing, swallowing, and/or passage of the material through the skin may include: stomach or intestinal upset (nausea, vomiting, diarrhea) irritation (nose, throat, airways).

Poison Class

-

Fire Fighting Measures

Fire Fighting

Extinguish fire using Use an extinguishing media appropriate for surrounding fire.. No special precautions necessary when fighting fires involving this product.

Accidental Release Measures

Small spills/leaks

Small Spill - Sweep up material for disposal or recovery. Large Spill - Persons not wearing protective equipment should be excluded from area of spill until clean-up has been completed. Shovel material into containers. Thoroughly sweep area of spill to clean up any residual material.

Stability and Reactivity

Stability

Stable.

Incompatibilities

Water