Ammonia solution , ≥28%nh3inh2o, electronic level , 1336-21-6

Synonym(s):
Ammonia aqueous;Ammonia Solution;Ammonia water;Ammonium hydroxide solution;Ammonium hydroxide solution, Ammonia water

CAS NO.：1336-21-6

Empirical Formula: H5NO

Molecular Weight: 35.05

MDL number: MFCD00066650

EINECS: 215-647-6

Update time: 2022-07-08

PRODUCT Properties

Melting point:	-77°C
Boiling point:	36°C
Density	0.91 g/mL at 20 °C
vapor density	1.2 (vs air)
vapor pressure	115 mmHg at 20 °C for 29% solution
storage temp.	2-8°C
solubility	Water (Soluble)
form	Liquid, Single Sub-Boiling Quartz Distillation
pka	9.3(at 25℃)
color	Colorless
Specific Gravity	approximate 0.96 (10%, 15℃)
PH	10.09(1 mM solution);10.61(10 mM solution);11.12(100 mM solution);
Odor	Strong pungent ammonia odor detectable at 17 ppm
explosive limit	27%
Water Solubility	Miscible with water.
λmax	λ: 260 nm Amax: 0.01 λ: 280 nm Amax: 0.01
Merck	14,494
BRN	3587154
Stability:	Stable. Incompatible with copper, copper alloys, acids, galvanised iron, zinc, aluminium, bronze, dimethyl sulphate, mercury, alkali metals.
InChIKey	VHUUQVKOLVNVRT-UHFFFAOYSA-N

Description and Uses

Ammonium hydroxide is a colorless, liquid solution with a characteristic and pungent odor. It is ammonia combined with water. Ammonia (NH3) is a compound consisting of nitrogen and hydrogen. Both ammonia and ammonium hydroxide are very common compounds, found naturally in the environment (in air, water, and soil) and in all plants and animals, including humans. Ammonia is a source of nitrogen, an essential element for plants and animals. Ammonia is also produced by the human body – by our organs and tissues and by beneficial bacteria living in our intestines.

Ammonia plays an important role in protein synthesis in the human body. In brief summary, all living things need proteins, which are comprised of some 20 different amino acids. While plants and microorganisms can synthesize most amino acids from the nitrogen in the atmosphere, animals cannot. For humans, some amino acids cannot be synthesized at all and must be consumed as intact amino acids. Other amino acids, however, can be synthesized by microorganisms in the gastrointestinal tract with the help of ammonia ions. Thus, ammonia is a key player in the nitrogen cycle and in protein synthesis. Ammonia also helps maintain the body's pH balance.

Ammonium hydroxide is widely utilized as a leavening agent or acidity regulator in food production. It serves as a precursor to some alkyl amines and is also used in the tobacco industry for flavor enhancement and as a processing aid. During furniture making, it combines with tannic acid and is used to darken or stain wood by making it iron salts. In chemical laboratories, it used for qualitative inorganic analysis, as a complexant and as a base. It is used to clean gold, silve, and platinum jewelry. It is an active component of Tollens' reagent (consisting of a solution of silver nitrate and ammonia) and is used to determine the presence of aldehyde or alpha-hydroxy ketone functional groups.

Safety

Symbol(GHS)	GHS05,GHS07,GHS09
Signal word	Danger
Hazard statements	H314-H335-H410
Precautionary statements	P261-P271-P273-P280-P303+P361+P353-P305+P351+P338
Hazard Codes	C,N
Risk Statements	34-50-22
Safety Statements	26-36/37/39-45-61
RIDADR	UN 2672 8/PG 3
WGK Germany	2
RTECS	BQ9625000
F	34
Autoignition Temperature	690 °C (for ammonia)
TSCA	Yes
HazardClass	8
PackingGroup	III
HS Code	28142000
Toxicity	LD50 oral (rat) 350 mg/kg PEL (OSHA) 35 ppm (27 mg/m3) TLV-TWA (ACGIH) 25 ppm (17 mg/m3) STEL (ACGIH) 35 ppm (27 mg/m3)