-
外観
白色, 結晶性粉末又は塊
-
溶解性
水に易溶。エタノール, エーテル, アセトンに不溶。水に溶け、エタノール溶けにくい。
-
用途
補助キレート剤。
-
化学的特性
white crystalline powder
-
使用
Ammonium citrate tribasic is mainly used for chemical analysis, in industry for water treatment, in food industry for buffering agent and emulsifier, for metal surface cleaning (in particular petroleum pipeline cleaning), as a ceramic dispersant,as auxiliary infiltration agent, as detergent material and as soil improvement agent component.Ammonium citrate tribasic is applied in electroplating industry for non cyanide plating complexing agent, used mostly for preparing anti rust agent in machinery industry and as buffering agent. It serves as a chemical reagent in analytical chemistry to determine the efficient phosphate levels in phosphate salts and fertilizer.
-
定義
ChEBI: A citrate salt in which all three carboxy groups are deprotonated and associated with ammonium ions as counter-cations.
-
农业用途
Ammonium citrate is a white, granular, water-soluble
salt of ammonia and citric acid. It is used in a neutral
solution for determining the phosphorus content of
phosphate fertilizers (such as calcium hydrogen
phosphate (CaHPO4)), that are insoluble in water but
dissolve in complexing citrate solutions.
The fertilizer residue, after extraction of watersoluble
phosphorus, is re-extracted with a neutral or
strongly alkaline solution of 1 normal (1N) ammonium
citrate for a prescribed period, and the slurry filtered.
Citrate-soluble phosphorus is the phosphorus content in
the filtrate and is expressed as a percentage by weight of
the fertilizer.
The extraction of phosphate with 1N ammonium
citrate is carried out routinely for 30 minutes, first at
room temperature and then at 4O℃ For neutral
ammonium citrate solution, a temperature of 65℃ is
preferred.
Some European countries use an alkaline ammonium
citrate solution, which extracts smaller amounts of
phosphorus. Some experts consider it to be better
correlated with phosphorus uptake and plant growth.
However, most countries use a neutral normal
ammonium citrate solution for extracting citrate soluble
phosphorus.
-
職業ばく露
It is used to make pharmaceuticals;
rust-proofing compounds and plasticizers; as a food additive;
stabilizing agent.
-
輸送方法
UN3077 Environmentally hazardous substances,
solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous
material, Technical Name Required.
-
不和合性
Contact with strong caustics causes the
release of ammonia gas.
-
廃棄物の処理
May be flushed to sewer with
large volumes of water.
