ChemicalBook CAS DataBase List 1929-82-4

1929-82-4

Name	Nitrapyrin
CAS	1929-82-4
EINECS(EC#)	217-682-2
Molecular Formula	C6H3Cl4N
MDL Number	MFCD00072500
Molecular Weight	230.91
MOL File	1929-82-4.mol

Chemical Properties

Appearance	Crystals.
Melting point	62-63°C
Boiling point	136-138°C
density	1.8732 (rough estimate)
vapor pressure	2.8 x 10^-3 mmHg at 20 °C (quoted, Verschueren, 1983)
refractive index	1.6000 (estimate)
Fp	100 °C
storage temp.	0-6°C
solubility	Soluble in 10 mg/ml ethanol.
form	Powder
pka	-3.75±0.10(Predicted)
color	White
Specific Gravity	1.579 (25℃)
Water Solubility	Insoluble. <0.01 g/100 mL at 18 ºC
Merck	14,6574
BRN	1618997
Henry's Law Constant	2.13 x 10^-3 atm?m³/mol (approximate - calculated from water solubility and vapor pressure)
Exposure limits	NIOSH REL: 10 mg/m3, STEL 20 mg/m3 (total), 5 mg/m3 (respirable fraction); OSHA PEL: 15 mg/m3 (total), 5 mg/m3 (respirable fraction); ACGIH TLV: TWA 10 mg/m3.
InChIKey	DCUJJWWUNKIJPH-UHFFFAOYSA-N
LogP	3.325-3.41 at 23.5℃
CAS DataBase Reference	1929-82-4(CAS DataBase Reference)
NIST Chemistry Reference	Pyridine, 2-chloro-6-(trichloromethyl)-(1929-82-4)
EPA Substance Registry System	1929-82-4(EPA Substance)

Safety Data

Hazard Codes	Xn;N,Xi,N,Xn
Risk Statements	R22:Harmful if swallowed. R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment . R36/37/38:Irritating to eyes, respiratory system and skin . less more
Safety Statements	S24:Avoid contact with skin . S61:Avoid release to the environment. Refer to special instructions safety data sheet . S37/39:Wear suitable gloves and eye/face protection . S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . less more
RIDADR	UN 2811
WGK Germany	2
RTECS	US7525000
TSCA	Yes
HazardClass	6.1(b)
PackingGroup	III
HS Code	29333990
Safety Profile	Poison by ingestion. Moderately toxic by skin contact. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits very toxic fumes of Cland NOx. less more
Toxicity	LC50 for channel catfish 5.8 mg/L (Worthing and Hance, 1991); acute oral LD50 for rats 1,230 mg/kg (Verschueren, 1983), 940 mg/kg (RTECS, 1985). less more

Hazard Information

General Description

Colorless crystals or off-white crystalline solid.

Reactivity Profile

NITRAPYRIN(1929-82-4) is a base. Reacts exothermically with acids.

Air & Water Reactions

Insoluble in water.

Hazard

Liver damage. Questionable carcinogen.

Fire Hazard

Flash point data for this compound are not available. NITRAPYRIN is probably combustible.

Chemical Properties

Crystals.

Physical properties

Colorless to white crystalline solid with a mild, sweet odor

Uses

Bactericide used to inhibit Nitrosomonas spp. from oxidizing ammonium ions in soil.

Uses

Fertilizer additive to control nitrification and prevent loss of soil nitrogen.

Definition

ChEBI: Nitrapyrin is a chloropyridine that is 2-chloropyridine which is substituted by a trichloromethyl group at position 6. It is a nitrification inhibitor that is co-applied with nitrogen fertilizer in agroecosystems. It has a role as a nitrification inhibitor, an antibacterial agent and an agrochemical.

Flammability and Explosibility

Nonflammable

Agricultural Uses

Nitrapyrin, also called N serve, is a nitrification inhibitor

Environmental Fate

Biological. 6-Chloropicolinic acid and carbon dioxide were reported as biodegradation products (Verschueren, 1983).
Soil. Hydrolyzes in soil to 6-chloropyridine-2-carboxylic acid (Worthing and Hance, 1991).
Photolytic. Photolysis of nitrapyrin in water yielded 6-chloropicolinic acid, 6-hydroxypicolinic acid and an unidentified polar material (Verschueren, 1983).
Chemical/Physical. Emits toxic fumes of nitrogen oxides and chlorides when heated to decomposition (Sax and Lewis, 1987; Lewis, 1990).

Material Safety Data Sheet(MSDS)

Questions And Answer

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