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Nickel Structure


Chemical Properties

Melting point 1453 °C (lit.)
Boiling point 2732 °C (lit.)
Density  8.9 g/mL at 25 °C (lit.)
vapor density  5.8 (vs air)
storage temp.  no restrictions.
form  wire
Specific Gravity 8.9
color  White to gray-white
Odor Odorless
PH 8.5-12.0
PH Range 9 - 11 at 20 °C
Resistivity 6.97 μΩ-cm, 20°C
Water Solubility  It is insoluble in water.
Sensitive  air sensitive
Merck  14,8107
Exposure limits TLA-TWA (metal) 1 mg/m3 (ACGIH, MSHA, and OSHA); (soluble inorganic compounds) 0.1 mg(Ni)/m3 (ACGIH) 0.015 mg (Ni)/m3 (NIOSH); (insoluble inorganic compounds) 1 mg/m3 (ACGIH).
Stability Stable in massive form. Powder is pyrophoric - can ignite spontaneously. May react violently with titanium, ammonium nitrate, potassium perchlorate, hydrazoic acid. Incompatible with acids, oxidizing agents, sulfur.
CAS DataBase Reference 7440-02-0(CAS DataBase Reference)
IARC 2B (Vol. Sup 7, 49) 1990
NIST Chemistry Reference Nickel(7440-02-0)
EPA Substance Registry System Nickel (7440-02-0)


Signal wordDanger
Hazard statements H317-H351-H372
Precautionary statements P201-P202-P260-P280-P302+P352-P308+P313
Hazard Codes  C,Xi,Xn,F,T
Risk Statements  34-50/53-43-40-10-17-52/53-48/23
Safety Statements  26-45-60-61-36-22-36/37-16-15-5-36/37/39-43-28
RIDADR  UN 1493 5.1/PG 2
WGK Germany  3
RTECS  VW4725000
Autoignition Temperature 87 °C
HazardClass  4.1
PackingGroup  II
HS Code  38151100
Hazardous Substances Data 7440-02-0(Hazardous Substances Data)
Toxicity Occupational exposures may occur in its mining, smelting, and refining. The general population ingests nickel in food. Skin sensitization and dermatitis leading to chronic eczema, called “nickel itch,” frequently occurs, especially in wearers of pierced earrings. Nickel can also irritate the conjunctiva and respiratory tract mucous membranes. Absorption from the digestive tract is poor, so systemic poisoning is rare, but since it is an irritant it acts as an emetic. Systemic effects include hyperglycemia, capillary damage, CNS depression, myocardial weakness, and kidney damage. Nickel and its compounds are carcinogenic following inhalation, but not following ingestion or skin contact. Cancer of the lung and nasal passages results, with a latent period of about 25 years; smokers are at greater risk. In addition to irritation and carcinogenesis, nickel carbonyl (nickel tetracarbonyl, Ni(CO)4) exerts relatively mild, tran_x0002_sientinitial symptoms including headache, giddiness, nausea, and shortness of breath. These symptoms are followed by very serious symptoms hours to days later, consisting of tightness in the chest, shortness of breath, rapid respiration, pulmonary edema, cyanosis, and extreme weakness; this can be fatal. Heat decomposition of nickel carbonyl yields carbon monoxide. Chelating agents can be used to remove nickel from the body.
IDLA 10 mg Ni/m3
NFPA 704:
2 1

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