Ammonium citrate, dibasic

  • Diammonium citrate
  • Diammonium hydrogen 2-hydroxypropane-1,2,3-tricarboxylate
Formula
C6H8O7.2NH3
Structure
Description
Ammonium citrate is a white granular solid.
Uses
Determination of phosphate, especially in fertilizers.

Registry Numbers and Inventories.
CAS
3012-65-5
EC (EINECS/ELINCS)
221-146-3
EC Class
irritant
UN (DOT)
9087
Merck
12,540
Beilstein/Gmelin
4925760
Beilstein Reference
0-03-00-00556
Swiss Giftliste 1
G-9328
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
C6H14N2O7
Formula mass
226.19
Density
1.483 g/cm3 (20 C)
Solubility in water
Soluble

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with skin and eyes. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.
Disposal code
14
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizers.
Decomposition
Carbon monoxide, carbon dioxide, nitric oxide (NOx) and ammonia (NH3) fumes.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam.
Fire potential
Combustible solid.
Hazards
Containers may explode when heated.
Combustion products
Toxic ammonia gas may form in fire.
Health
1
 
Flammability
1
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
Increases in blood pressure and pulse have been reported. An altered mental status (coma) may be seen, but is not characteristic unless hypoxemia occurs. Seizures may occur with extensive absorption. No data were available to assess the teratogenic potential of this agent. <br>Decreased egg production has occurred in experimental animals. Ammonia crosses the ovine placental barrier. <br>No data were available to assess the potential effects of exposure to this agent during lactation. <br>No information about possible male reproductive effects was found in available references.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
May cause cyanosis, characterized by bluish-colored skin. Causes respiratory tract irritation. Inhalation of high concentrations can cause swelling of the lips and conjunctiva, temporary blindness, chest tightness, rapid and weak pulse, and pulmonary edema.
   Skin
May cause severe irritation and possible burns.
   Eyes
Causes eye irritation. May cause cataracts and atrophy of the retina and iris. May cause severe and immediate pain followed by conjunctival edema and corneal clouding.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
9087
Response guide
Hazard class
9.2
USCG CHRIS Code
ACI
 
HS Code
2918 15 00
 
Std. Transport #
4962658