기본 정보
- CAS
7440-01-9- 표준 SMILES
[Ne]- InChIKey
GKAOGPIIYCISHV-UHFFFAOYSA-N- 분자식
- Ne
- 평균 분자량
- 20.18 g/mol
- 단동위원소 질량
- 19.99244018
개요
Neon appears as a colorless odorless noncombustible gas. Chemically inert. The vapors are lighter than air. Nontoxic, but can act as a simple asphyxiant. Exposure of the container to prolonged heat or fire may cause it to rupture violently and rocket. Principal use is to fill lamp bulbs and tubes.
이름 및 식별자
- 우선 이름
- Neon
- IUPAC
- neon
- 현지명
- 네온
- 영어명
- NEON
- 분자식
- Ne
- 분자량
- 20.18
이름 및 동의어
NEON7440-01-9Neon ion beamNeon, Elemental4VB4Y46AHDRefChem:6055231-110-9Neneon atomNeon22NEON20Neon element
이름 더 보기
네온10Neneongasneon(0)liquidneonneonliquidneonliquideChebi:33310NEON, 99.99+%
Element NeonElement:NeonAtomic NeonElement-NeElement:NeNeon, compressedNeon (element)Neon (atomic)
데이터베이스 식별자
- CAS
7440-01-9- PubChem CID
- 23935
- DTXSID
DTXSID0064678- ChEBI
CHEBI:33310- UNII
- 4VB4Y46AHD
- EC Number
- 231-110-9
- Nikkaji
- J54.257A
물성
구조 계산 물성
- 극성 표면적
- 0 Ų
- 수소 결합 공여자 수
- 0
- 수소 결합 수용자 수
- 0
- 회전 가능 결합 수
- 0
- 무거운 원자 수
- 1
- 형식 전하
- 0
- 복잡도
- 0
실험 및 물리화학적 성질
Chemical ClassesToxic Gases & Vapors -> Simple Asphyxiants
SpringerMaterials Propertiesthermal expansion coefficient
LogPlog Kow = 0.28
OdorOdorless
TasteTasteless
Density
0.825 g/L
GAS: density: 0.899994 kg/cu m at 0 °C (101.3 kPa): 9.552 kg/cu m (normal BP)
SOLID: normal density: 1444 kg/cu m (triple point); Heat of vaporization: 2.139 kJ/mol (triple point); Heat of fusion: 0.335 kJ/mol (triple point)
1.204 @ BP
Color/Form
Colorless gas
Monoatomic, inert ... Does not condense at the temperature of liquid air; solid at the temperature of liquid hydrogen; the solid form exists as face-centered cubic crystals at normal pressure
Solubility
Negligible
Solubility of gas in water (20 °C): 10.5 cu cm/kg water
Solubility in water: very poor
Boiling Point
-246.053 °C
-246.1 °C
-245.9 °C @760 [mm Hg]
Melting Point
-248.609 °C triple point (43 kPa)
-248.7 °C
-248.67 °C
Vapor Density
0.6964 (Air = 1)
Relative vapor density (air = 1): 0.69
Physical Description
Neon appears as a colorless odorless noncombustible gas. Chemically inert. The vapors are lighter than air. Nontoxic, but can act as a simple asphyxiant. Exposure of the container to prolonged heat or fire may cause it to rupture violently and rocket. Principal use is to fill lamp bulbs and tubes.
Neon, refrigerated liquid (cryogenic liquid) appears as a colorless, odorless, extremely cold liquid. Rapidly evolves into neon gas. Nontoxic and chemically inert. May act as an asphyxiate by displacement of oxygen. Contact with the liquid may cause frostbite. Exposure of container to prolonged heat or fire may cause violent rupture and rocket.
A colorless odorless noncombustible gas; [CAMEO]
COLOURLESS ODOURLESS COMPRESSED GAS.
물리화학적 성질
- 녹는점
- -248.67 °C · -248.67 °C(lit.)
- 끓는 점
- 246 °C · −246 °C(lit.)
- 밀도
- 0.9002 · 0.9002(0℃)
- 증기 밀도
- 0.7 · 0.7 (21 °C, vs air)
- 용해도
- 2 O · slightly soluble in H2O
- 물리적 상태
- 무색 가스
- 색상
- 무색의
- 수용성
- 10.5 mL/100g · 10.5mL/100g H2O(20°C, 101.32kPa) [KIR78]; 헨리의 법칙 상수, k×10?4: 13.023(70.0°C), 12.022(124.5°C), 9.805(174.5°C), 7.166(226.4°C), 4.160(283.7°C) [POT78]
- 비열
- 1.03 J/ · Cp(gas): 1.03 J/(g·K), at 25℃
- Merck
- 13 · 13,6483
- Henry's Law Constant
- 4.5 · 4.5×10-6 mol/(m3Pa) at 25℃, Fernández-Prini et al. (2003)
- Dielectric constant
- 1.000127 · 1.000127(20.0℃)
- 안정성
- 안정적인. 반응할 가능성이 낮다
- InChI
- InChI=1S/Ne
- InChIKey
- GKAOGPIIYCISHV-UHFFFAOYSA-N
- SMILES
- [Ne]
- EPA
- Neon (7440-01-9)
화학적 성질
Neon is an inert, colorless, odorless, tasteless gas or liquid.
안전 및 규제
안전 정보는 참고용이며, 공급업체의 물질안전보건자료(SDS), 관련 법규 및 전문가 평가를 대체하지 않습니다.
GHS 분류
GHS Classification
Warning
H280 (62.6%): Contains gas under pressure; may explode if heated [Warning Gases under pressure]
P282, P336+P317, P403, and P410+P403 (click each P-code to see the statement)
Aggregated GHS information provided per 430 reports by companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
유해성 정보
Regulatory Information
Chemical: Neon
Neon: Non hazardous
The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)
Other Safety InformationIMAP assessments - Neon: Human health tier I assessment
DOT Label
Non-Flammable Gas
Non-Flammable Gas
Fire Hazards
Excerpt from ERG Guide 120 [Gases - Inert (Including Refrigerated Liquids)]:
Excerpt from ERG Guide 120 [Gases - Inert (Including Refrigerated Liquids)]:
· Non-flammable gases.
· Non-flammable gases.
Not combustible. Heating will cause rise in pressure with risk of bursting.
Health Hazards
Excerpt from ERG Guide 120 [Gases - Inert (Including Refrigerated Liquids)]:
Excerpt from ERG Guide 120 [Gases - Inert (Including Refrigerated Liquids)]:
· Vapors may cause dizziness or asphyxiation without warning, especially when in closed or confined areas.
· Vapors may cause dizziness or asphyxiation without warning, especially when in closed or confined areas.
Hazards SummarySimple asphyxiant; Evaporating liquid can cause frostbite; [ICSC]
DOT ID and Guide
1065 120
1913 120
FDA RequirementsDiagnostic Devices. A neon gas analyzer is a device intended to measure the concentration of neon in a gas mixture exhaled by a patient. The device may use techniques such as mass spectrometry or thermal conductivity.
Reactive Group
Not Chemically Reactive
Not Chemically Reactive
UN ClassificationUN Hazard Class: 2.2
Reactivity Profile
These substances undergo no chemical reactions under any known circumstances. They are nonflammable, noncombustible and nontoxic. They can asphyxiate.
These substances undergo no chemical reactions under any known circumstances. They are nonflammable, noncombustible and nontoxic. They can asphyxiate. Contact of very cold liquefied gas with water may result in vigorous or violent boiling of the product and extremely rapid vaporization due to the large temperature differences involved. If the water is hot, there is the possibility that a liquid "superheat" explosion may occur. Pressures may build to dangerous levels if liquid gas contacts water in a closed container [Handling Chemicals Safely 1980].
Physical DangersThe gas is lighter than air.
안전 및 보호
Fire Fighting
Excerpt from ERG Guide 120 [Gases - Inert (Including Refrigerated Liquids)]:
Excerpt from ERG Guide 120 [Gases - Inert (Including Refrigerated Liquids)]:
In case of fire in the surroundings, use appropriate extinguishing media. In case of fire: keep cylinder cool by spraying with water.
First Aid MeasuresFresh air, rest. Artificial respiration may be needed. Seek medical attention if you feel unwell.
Accidental Release Measures
· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.
· Do not touch or walk through spilled material.
· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.
· Do not touch or walk through spilled material.
First Aid
Excerpt from ERG Guide 120 [Gases - Inert (Including Refrigerated Liquids)]:
Excerpt from ERG Guide 120 [Gases - Inert (Including Refrigerated Liquids)]:
General First Aid:
General First Aid:
Safe StorageFireproof if in building. Keep in a well-ventilated room.
Exposure Control and Personal Protection
· Wear positive pressure self-contained breathing apparatus (SCBA).
· Wear positive pressure self-contained breathing apparatus (SCBA).
Fire Fighting Procedures
If material involved in fire: Extinguish fire using agent suitable for type of surrounding fire. Material itself does not burn or burns with difficulty. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. /Neon, compressed; Neon, refrigerated liquid/
Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Special protective equipment for fire-fighters: Wear self contained breathing apparatus for fire fighting if necessary.
Storage ConditionsKeep container tightly closed in a dry and well-ventilated place. Contents under pressure.
Cleanup Methods
Personal precautions: Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Environmental precautions: Do not let product enter drains. Methods and materials for containment and cleaning up: Clean up promptly by sweeping or vacuum.
Nonfire Spill Response
Excerpt from ERG Guide 120 [Gases - Inert (Including Refrigerated Liquids)]:
Excerpt from ERG Guide 120 [Gases - Inert (Including Refrigerated Liquids)]:
Disposal Methods
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal and plant life; and conformance with environmental and public health regulations.
Spillage DisposalPersonal protection: self-contained breathing apparatus. Ventilation.
독성 정보
Interactions
...The anesthetic properties of helium and neon at hyperbaric pressures /were assessed/ by testing their capacity to decrease anesthetic requirement for desflurane using electrical stimulation of the tail as the anesthetic endpoint (ie, the minimum alveolar anesthetic concentration [MAC]) in rats. Partial pressures of helium or neon near those predicted to produce anesthesia by the Meyer-Overton hypothesis (approximately 80-90 atm), tended to increase desflurane MAC, and these partial pressures of helium and neon produced convulsions when administered alone. ... It has been thought that the high pressures of helium and neon that might be needed to produce anesthesia, antagonize their anesthetic properties (pressure reversal of anesthesia). /The authors/ propose an alternative explanation: like other compounds with a low affinity to water, helium and neon are intrinsically without anesthetic effect.
Adverse EffectsOther Poison - Simple Asphyxiant
Signs and SymptomsDizziness. Lethargy. Headache. Suffocation.
Natural Pollution SourcesNeon is a rare gaseous element present in the atmosphere to the extent of 1 part in 65,000 parts of air.
Human Toxicity Excerpts
/SIGNS AND SYMPTOMS/ Contact with the liquid can cause frostbite. /Neon, refrigerated liquid/
/OTHER TOXICITY INFORMATION/ Neon is among the number of gases and vapors that, when present in high concentrations in air, act primarily as simple asphyxiants without other significant physiologic effects.
Probable Routes of Human ExposureNIOSH (NOES Survey 1981-1983) has statistically estimated that 1,416 workers (125 of these were female) were potentially exposed to neon in the US(1).
Antidote and Emergency Treatment
Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Simple asphyxiants and related compounds/
Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Anticipate seizures and treat if necessary ... . Use rapid rewarming techniques if frostbite occurs ... . /Simple asphyxiants and related compounds/
Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious or is in severe respiratory distress. Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Treat seizures with diazepam or lorazepam ... . /Simple asphyxiants and related compounds/
규제 정보
FDA RequirementsDiagnostic Devices. A neon gas analyzer is a device intended to measure the concentration of neon in a gas mixture exhaled by a patient. The device may use techniques such as mass spectrometry or thermal conductivity.
안전 데이터
- wgk
- 3
- tsca
- TSCA listed
- rtecs
- QP4450000
- ridadr
- UN 1913 2.2 (NEON, REFRIGERATED LIQUID)
- safety_code
- 38
- 위험 등급
- 2.2
- 기존화학 물질
- KE-25807
- DOT ClassificationII
- 2.2 (Nonflammable gas)
- F 고인화성물질
- 4.5-31
- 유해 물질 데이터
- 7440-01-9(Hazardous Substances Data)
화학 및 산업
약리 정보
Protein BindingNo pharmacokinetic data available.
Pharmacodynamics
A study demonstrated that neon beam radiotherapy improved the 5-year actuarial disease-specific survival rate and local control in patients with paranasal sinus tumours, macroscopic salivary gland tumours, bile duct carcinomas, macroscopic soft tissue and bone sarcomas, and advanced prostate carcinomas.
Mechanism of Action
In a pulmonary diffusion capacity test, the diffusing capacity for carbon monoxide (Dlco) assesses the rate at which oxygen is transferred from the lung to the pulmonary capillary bed. In a neon gas analyzer, the mixture of carbon monoxide, neon gas, oxygen, and the balance nitrogen is inhaled by the individual and is eventually exhaled after being held at near full inspiration for brief seconds. The concentrations and ratio of carbon monoxide and neon is measured in the alveolar fraction of the expired gas. The change in the concentration of the tracer gas reflects the mean alveolar carbon monoxide concentration at the start of the breath hold and provides a measure of alveolar volume by gas dilution. Neon ion radiotherapy has high linear energy transfer thus produces biological behaviour similar to neutron beams. The rays are associated with a reduction in the oxygen enhancement ratio, which allows for more specificity for hypoxic cells, less variation in cell-cycle related radio sensitivity, and less capability for repair of radiation injury.
Biological Half-LifeNo pharmacokinetic data available.
Metabolism/MetabolitesNo pharmacokinetic data available.
Absorption, Distribution and Excretion
No pharmacokinetic data available.
No pharmacokinetic data available.
No pharmacokinetic data available.
No pharmacokinetic data available.
용도 및 제조
Uses
Used in neon lamps, ionization chambers, current detectors, lasers, and cryogenic applications; [Merck Index]
(Gas) Luminescent electric tubes and photoelectric bulbs, electronic industry, high-voltage indicators, lasers. (Liquid) cryogenic research.
Gas in neon light tubes; ingredient of gaseous fillers for antifog devices, warning signals, electrical current detectors, high-voltage indicators for high-tension electric lines, lightening arresters, wave-meter tubes; in Ne-He lasers; in mixtures with He and Ar in Geiger counters.
Liquid as cryogen to produce low temperatures
Methods of Manufacturing
In the distillative fractionation of air ... the noble gases helium and neon become concentrated in the reflux condenser of /a/ ... medium-pressure column together with the hydrogen contained in the air. In noble gas production there is an enrichment of up to about a thousand times the input value. Further concentration of the helium and neon to ca. 50 mol% is carried out in a small secondary column whose overhead condenser is cooled at ca. 80 deg K with evaporating liquid nitrogen. A fraction can be drawn from the top of this column with a typical composition of 11 mol% He, 35 mol% Ne, 5 mol% H2 and 49 mol% N2 with a noble gas yield of over 90%. Further separation of this fraction is by ... condensation ... absorption ... /or/ adsorption.
By fractional distillation of liquid air. It constitutes 0.0012% of normal air.
Formulations/PreparationsGrade: Technical, highest purity
General Manufacturing InformationNeon: ACTIVE
응용 분야
개요In 1898, Dr William Ramsay and Morris M. Travers, a Scottish scientist and a British scientist, respectively, discovered neon as a condensation product in liquefied air, as in a process similar to that used to collect neon today. Neon’s use in lighting evolved from discoveries that gases under low pressure conduct electricity. When some flowing electrons collide with residual gas in an evacuated glass tube, the resulting ions emit light as they return to their nonexcited state. The color of the light depends on the residual gas; neon gas produces a red color and argon, another inert gas often used in tubes (which are frequently and incorrectly called neon lights), produces a blue color. These two basic colors are often modified into many different hues by the addition of such elements as mercury and cadmium. The neon found on the Earth is considered to be primordial in origin. Most of the neon is sequestered in the Earth’s rocks or dissolved in water, with small amounts escaping into the atmosphere during geologic weathering. The escaped gas is slowly lost into space faster than it is replenished. Consequently, neon constitutes only a small part (0.0018%) of the Earth’s atmosphere, although this element is estimated to be the fourth most abundant in the universe.
출처Neon is the fourth most abundant element in the universe, but it makes up only 18.18ppm of the Earth’s atmosphere. It is the 82nd most abundant element on Earth. Neon is believed to be produced by radioactive decay deep in the Earth. As it rises to thesurface, it escapes into the atmosphere and is soon dissipated. Some neon is found mixed withnatural gas and several minerals. Neon is produced as a secondary product of the fractional distillation of liquid nitrogenand oxygen. Air is liquefied, and as it warms, nitrogen and oxygen boil off, leaving behindseveral other colder gases, including about 75% neon, which is then passed through activatedcharcoal to remove hydrogen and other gases.
역사Discovered by Ramsay and Travers in 1898. Neon is a rare gaseous element present in the atmosphere to the extent of 1 part in 65,000 of air. It is obtained by liquefaction of air and separated from the other gases by fractional distillation. Natural neon is a mixture of three isotopes. Fourteen other unstable isotopes are known. It is very inert element; however, it is said to form a compound with fluorine. It is still questionable if true compounds of neon exist, but evidence is mounting in favor of their existence. The following ions are known from optical and mass spectrometric studies: Ne+, (NeAr)+, (NeH)+, and (HeNe+). Neon also forms an unstable hydrate. In a vacuum discharge tube, neon glows reddish orange. Of all the rare gases, the discharge of neon is the most intense at ordinary voltages and currents. Neon is used in making the common neon advertising signs, which accounts for its largest use. It is also used to make high-voltage indicators, lightning arrestors, wave meter tubes, and TV tubes. Neon and helium are used in making gas lasers. Liquid neon is now commercially available and is finding important application as an economical cryogenic refrigerant. It has over 40 times more refrigerating capacity per unit volume than liquid helium and more than three times that of liquid hydrogen. It is compact, inert, and is less expensive than helium when it meets refrigeration requirements. Neon costs about $800/80 cu. ft. (2265 l).
용도Gas in neon light tubes; ingredient of gaseous fillers for antifog devices, warning signals, electrical current detectors, high-voltage indicators for high-tension electric lines, lightning arresters, wave-meter tubes; in Ne-He lasers; in mixtures with He and Ar in Geiger counters. Liquid as cryogen to produce low temperetures.
일반 설명A colorless odorless noncombustible gas. Chemically inert. The vapors are lighter than air. Nontoxic, but can act as a simple asphyxiant. Exposure of the container to prolonged heat or fire may cause NEON to rupture violently and rocket. Principal use is to fill lamp bulbs and tubes.
상·하류 제품 정보
상류 원료
추가 설명
정의An inert colorless odorless monatomic element of the rare-gas group. Neon forms no compounds. It occurs in minute quantities (0.0018% by volume) in air and is obtained from liquid air. It is used in neon signs and lights, electrical equipment, and gas lasers. Symbol: Ne; m.p. –248.67°C; b.p. –246.05°C; d. 0.9 kg m–3 (0°C); p.n. 10; r.a.m. 20.18.
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