Diammonium tartrate

184.15

184.069534

221-618-9

3077|3082

2923900090

120.72000

log Kow = -2.79 (est)

White semi-transparent crystalline

1.601 g/cm³

decomposes [CRC10]

399.3ºC at 760mmHg

209.4ºC

H2O: 63 g/L (15 ºC)

Store in a cool, dry place. Store in a tightly closed container.

7.1X10-16 mm Hg at 25 °C

32.4 º (c=1.84, H2O)

Odorless

pH of a 0.2 molar aqueous solution: 6.5

Water soluble.

Salts, Acidic

Acidic salts, such as AMMONIUM TARTRATE, are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions. Special Hazards of Combustion Products: Toxic oxides of nitrogen or ammonia gas may form in fires (USCG, 1999).

6.1

UN 3077 9 / PGIII

3

20/21/22-36/37/38

24/25-36-26

WW8050000

Xn

Stable. Incompatible with strong acids.

Special Hazards of Combustion Products: Toxic oxides of nitrogen or ammonia gas may form in fires. (USCG, 1999)

Excerpt from ERG Guide 171 [Substances (Low to Moderate Hazard)]: SMALL FIRE: Dry chemical, CO2, water spray or regular foam. LARGE FIRE: Water spray, fog or regular foam. Do not scatter spilled material with high-pressure water streams. Move containers from fire area if you can do it without risk. Dike fire-control water for later disposal. FIRE INVOLVING TANKS: Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. (ERG, 2016)

Excerpt from ERG Guide 171 [Substances (Low to Moderate Hazard)]: As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above. FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)

Excerpt from ERG Guide 171 [Substances (Low to Moderate Hazard)]: Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent dust cloud. Avoid inhalation of asbestos dust. SMALL DRY SPILL: With clean shovel, place material into clean, dry container and cover loosely; move containers from spill area. SMALL SPILL: Pick up with sand or other non-combustible absorbent material and place into containers for later disposal. LARGE SPILL: Dike far ahead of liquid spill for later disposal. Cover powder spill with plastic sheet or tarp to minimize spreading. Prevent entry into waterways, sewers, basements or confined areas. (ERG, 2016)

Dust mask; goggles or face shield; rubber gloves (USCG, 1999)

Contact with solid may irritate eyes. (USCG, 1999)

EYES: flush with water. (USCG, 1999)

(R*,R*)-(+-)-2,3-dihydroxybutanedioic acid, monoammonium monosodium salt

Butanedioic acid, 2,3-dihydroxy- (2R,3R)-, ammonium salt (1:?): ACTIVE