요오드화 은

요오드화은 · 요오드화 은 · 은(I)요오드화물 · 은요오드화물 · AgI · SILVER(I) IODIDE · neosilvol · neosiluol

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식별자 및 물리적 특성

CAS No.	7783-96-2
분자식	AgI
평균 분자량	234.773 g/mol
단동위원소 질량	233.80957 g/mol
SMILES	[Ag][I]
InChIKey	MSFPLIAKTHOCQP-UHFFFAOYSA-M
PubChem CID	24563
EC No.	232-038-0
DTXSID	DTXSID0064836
현지명	요오드화 은

화학 및 물리적 성질

극성 표면적	0
수소 결합 공여자 수	0
수소 결합 수용자 수	0
회전 가능 결합 수	0
무거운 원자 수	2
형식 전하	0
복잡도	2
물질 분류	Metals -> Metals, Inorganic Compounds
SpringerMaterials Properties	dielectric constant
농약	RepellantsActive substance -> EU Pesticides database: Not approved
냄새	Odorless냄새 없는
맛	Tasteless
밀도	5.675.68 g/mL at 25 °C (lit.)
Color/Form	Light yellow, powdercrystals are hexagonal or cubic
용해도	Sol in hydriodic acid, /aqueous solutions of/ potassium iodide, sodium chloride, potassium cyanide, ammonium hydroxide, and sodium thiosulfate.Sol in concn soln of alkali bromides, chlorides, thiocyanates, thiosulfates, mercuric and silver nitratesIn water, 28X10-7 g/l @ 25 °C25X10-6 g/l at 60 °Cinsoluble in acid solutions
끓는 점	1506 °C1506°C
녹는점	552 °C557°C
증기압	1 MM HG @ 820 °C
Physical Description	Light yellow odorless solidGradually darkened by light[Merck Index] Insoluble in water (28X10-7 g/l at 25 deg C)[HSDB]
물리적 상태	고체
비중	6.01
색상	노란색
용해도	0.03mg/L
비열	Cp(crystal): 0.24 J/(g·K), at 25℃
Merck	14,8516
안정성	안정성 감광성. 강한 산화제와 호환되지 않습니다.
InChI	1S/Ag.HI/h1H/q+1/p-1
InChIKey	MSFPLIAKTHOCQP-UHFFFAOYSA-M
SMILES	[Ag]
Hardness, Mohs	2.5
NIST	Silver iodide(7783-96-2)
EPA	Silver iodide (AgI) (7783-96-2)

화학적 성질

Yellow Crystalline Powder

안전 및 규제

GHS 분류	This chemical does not meet GHS hazard criteria for 4.2% (2 of 48) of reports.WarningH400 (16.7%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]P273, P391, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 48 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.Danger
규제 정보	Chemical: Silver iodide (AgI)REACH registered substance: Silver iodide (EC: 232-038-0)Silver iodide (AgI): Does not have an individual approval but may be used under an appropriate group standard
유해성 요약	May cause irritation and argyria[MSDSonline] See Silver. See Iodine for the TLV of Iodides.The major hazards encountered in the use and handling of silver iodide stem from its toxicologic properties. Toxic by all routes (ie, inhalation, ingestion, and dermal contact), exposure to this odorless, light yellow, crystalline substance may occur from its use in seeding clouds for rain-making, as a photosensitive agent in photography, as a local antiseptic, and as a chemical intermediate. Effects from exposure may include skin rashes, conjunctivitis, argyria (a permanent ashen-gray discoloration of skin, conjunctiva, and internal organs), headache, fever, hypersensitivity, laryngitis, and bronchitis. Exposure should be minimized by engineering controls (eg, local exhaust ventilation, or process enclosure). In activities where over-exposure may occur, workers should wear impervious clothing, gloves, face protection, and a self-contained breathing apparatus. Such clothing and equipment should be removed before leaving the worksite. Skin that becomes contaminated with silver iodide should be promptly washed. Eating and smoking should be prohibited in silver iodide work areas. Silver iodide may form explosive compounds with sodium, potassium, acetylene, ammonia, and hydrogen peroxide. Silver iodide should be stored in cool, dark areas, away from the above materials. Before shipping silver iodide, consult with the regulatory requirements of the US Department of Transportation. For small dry spills of silver iodide, collect the material and deposit in sealed containers for reclamation. Before implementing land disposal of silver iodide waste, consult with environmental regulatory agencies for guidance.
RCRA 요건	D011A solid waste containing silver may or may not become characterized as a hazardous waste when subjected to the Toxicity Characteristic Leaching Procedure listed in 40 CFR 261.24, and if so characterized, must be managed as a hazardous waste. /Silver/

용도

Silver iodide is a yellow powder formed by the combination of a soluble iodide combined with silver nitrate. Silver iodide could also be formed by exposing metallic silver to the fumes of bromine as in the daguerreotype process. This was the primary halide used for all of the 19th century camera processes until the introduction of the silver bromide gelatin plate. With the exception of the daguerreotype, all silver iodide processes relied on physical development using a reducing agent such as gallic acid, pyrogallic acid, or ferrous sulfate, an acid restrainer, and excess silver.

제조 및 합성 방법

제조 방법

Silver iodide is prepared by adding a solution of sodium or potassium iodide to a hot solution of silver nitrate: Ag+ (aq) + Iˉ (aq) → Ag I (s) The precipitate is washed with boiling water. The preparation is done in the dark under ruby red light.