CAS No.1303-00-0,GALLIUM ARSENIDE Suppliers

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Basic Information

Molecular Structure:
CAS No.:	1303-00-0
Name:	GALLIUM ARSENIDE
Article Data:	1

Formula:	GaAs
Molecular Weight:	144.645
Synonyms:	Galliumarsenide;Gallium monoarsenide;Gallium monoarsenide (GaAs);
EINECS:	215-114-8
Density:	5.316 g/cm³
Melting Point:	1238 °C
Solubility:	< 0.1 g/100 mL (20 °C) in water
Appearance:	Gray cubic crystals
Hazard Symbols:	T; N
Risk Codes:	23/25-50/53
Safety:	20/21-28-45-60-61
Transport Information:	UN 1557
PSA:	0.00000
LogP:	-0.31160

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Consensus Reports

Reported in EPA TSCA Inventory. Arsenic and its compounds are on the Community Right-To-Know List.

Standards and Recommendations

OSHA PEL: OSHA: Cancer Hazard
ACGIH TLV: TWA 0.01 mg(As)/m³; Human Carcinogen; BEI: 35 µ (As)/L inorganic arsenic and methylated metabolites in urine
NIOSH REL: (Gallium Arsenide) CL 0.002 mg(As)/m³/15M

Specification

The Gallium arsenide, with the CAS registry number 1303-00-0 and EINECS registry number 215-114-8, has the systematic name and IUPAC name of arsanylidynegallium. And the molecular formula of this chemical is GaAs. It is kind of gray cubic crystals, and belongs to the following product categories: Inorganics; Electronic Materials; Materials Science; Micro/Nanoelectronics; Arsenides; Ceramics; Metal and Ceramic Science.

The physical properties of Gallium arsenide are as following: (1)ACD/LogP: 2.32; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 2; (4)#H bond donors: 1; (5)#Freely Rotating Bonds: 0; (6)Polar Surface Area: 28.72 Å²; (7)Index of Refraction: 1.674; (8)Molar Refractivity: 42.8 cm³; (9)Molar Volume: 113.9 cm³; (10)Polarizability: 16.96×10^-24cm³; (11)Surface Tension: 61.5 dyne/cm; (12)Density: 1.24 g/cm³; (13)Flash Point: 121.9 °C; (14)Enthalpy of Vaporization: 59.46 kJ/mol; (15)Boiling Point: 350 °C at 760 mmHg; (16)Vapour Pressure: 4.51E-05 mmHg at 25°C.

Preparation of Gallium arsenide: It can be prepared by direct reaction from the elements which is used in a number of industrial processes. For example, VPE reaction of gaseous gallium metal and arsenic trichloride:
2 Ga + 2 AsCl₃ → 2 GaAs + 3 Cl₂

Uses of Gallium arsenide: It can be used to produce light emission devices(LCD), LD, FRT, HEMT, HTB, MMIC, MIMIC, HSIC and solar cells and detectors.

You should be cautious while dealing with this chemical. It is toxic by inhalation and in contact with skin. It is also very toxic to aquatic organisms, and may cause long-term adverse effects in the aquatic environment. Therefore, you had better take the following instructions: When using, do not eat, drink or smoke; After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer); In case of accident or if you feel unwell, seek medical advice immediately (show label where possible); This material and/or its container must be disposed of as hazardous waste; Avoid release to the environment. Refer to special instructions safety data sheet.

You can still convert the following datas into molecular structure:
(1)SMILES: [As]#[Ga]
(2)InChI: InChI=1/As.Ga/rAsGa/c1-2
(3)InChIKey: JBRZTFJDHDCESZ-WMDPQSSYAY

The toxicity data is as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
mouse	LD50	intraperitoneal	4700mg/kg (4700mg/kg)	PERIPHERAL NERVE AND SENSATION: FLACCID PARALYSIS WITHOUT ANESTHESIA (USUALLY NEUROMUSCULAR BLOCKAGE) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: FOOD INTAKE (ANIMAL)	Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 45(10), Pg. 13, 1980.
rat	LD30	intraperitoneal	10gm/kg (10000mg/kg)	BEHAVIORAL: EXCITEMENT BEHAVIORAL: ATAXIA LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION	Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 24(3), Pg. 45, 1980.