Sodium Chloride

Sigma-Aldrich® Sodium Chloride Physical Properties
Molecular Formula	NaCl	Beilstein Registry	3534976	Melting Point	801 °C(lit.)
Molecular Weight	58.44	MDL Number	MFCD00003477	EG/EC Number	231-598-3
CAS Number	7647-14-5

Sigma-Aldrich Sodium Chloride Specifications Comparison
	S1679	S9888	S5629	S5886	S3014	S6191	S7653	71376
Grade	meets USP testing specifications	ACS reagent ≥99.0%	plant cell culture tested, ≥99.5%	cell, insect cell culture tested	for molecular biology, ≥98% (titration)	BPC, ≥99.5% (titration), cell culture tested	BioXtra, ≥99.5%	BioUltra, for molecular biology, ≥99.5% (AT)
Purity	≥99.0%	≥99.0%	≥99.5%	≥99.5%	≥98%	≥99.5%	≥99.5%	≥99.5%
Reagent Testing
	S1679	S9888	S5629	S5886	S3014	S6191	S7653	71376
260NM							≤0.01	≤0.01
280NM							≤0.01	≤0.01
Identity	X
pH		5.0 - 9.0 (25 °C, 5% in solution)					5.0 - 8.0 (20 °C, 1M in H₂O)	5.0 - 8.0 (25 °C, 1M in H₂O)
LOD	≤0.5%
Insoluable Matter		≤0.005%					filter test	filter test
Life Science Testing
	S1679	S9888	S5629	S5886	S3014	S6191	S7653	71376
Endotoxin						X
Cell test				X		X
Insect cell test				X		X
Plant cell test			X			X
RNase					X	X		X
DNAse					X	X		X
Protease					X	X		X
Phosphatase								X
Trace Elemental Impurities
	S1679	S9888	S5629	S5886	S3014	S6191	S7653	71376
Bromide(Br)	≤0.010%	≤0.01%					≤0.005%	≤0.0050%
Iodide(I)	X	≤0.002%					≤0.001%	≤0.0010%
Phosphate(P)	≤0.0025%	≤0.0005%			≤0.0005%		≤0.0005%	≤0.0005%
Sulfate(SO₄)	≤0.020%	≤0.004%					≤0.05%	≤0.0100%
Aluminum(Al)							≤0.0005%	≤0.0005%
Arsenic(As)	≤0.0001%						≤0.0001%	≤0.00001%
Barium(Ba)	X	X					≤0.0005%	≤0.0005%
Bismuth(Bi)							≤0.0005%	≤0.0005%
Calcium(Ca)		≤0.002%					≤0.002%	≤0.0010%
Cadmium(Cd)							≤0.0005%	≤0.0005%
Cobalt(Co)							≤0.0005%	≤0.0005%
Chromium(Cr)							≤0.0005%	≤0.0005%
Copper(Cu)							≤0.0005%	≤0.0005%
Iron(Fe)	≤0.0002%	≤0.0002%					≤0.0001%	≤0.0001%
Potassium(K)	≤0.05%	≤0.005%			≤0.0050%		≤0.005%	≤0.0050%
Lithium(L)							≤0.0005%	≤0.0005%
Magnesium(Mg)		≤0.001%					≤0.0005%	≤0.0005%
Manganese(Mn)							≤0.0005%	≤0.0005%
Molybdenum							≤0.0005%	≤0.0005%
Nickel(Ni)							≤0.0005%	≤0.0005%
Lead(Pb)		≤0.0005%			≤0.0005%	≤0.0005%	≤0.0005%	≤0.0005%
Strontium(Sr)							≤0.0005%	≤0.0005%
Zinc(Zn)							≤0.0005%	≤0.0005%
Total Nitrogen								≤0.001%
Chlorate and Nitrate(NO₃)		≤0.003%
Ferrocyanides	X
Magnesium and Alkaline Earth Metals	≤0.01%
Nitrites	X
Heavy Metals	≤0.0005%

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