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MSDS Material Safety Data Sheet
CAS

7732-18-5
7681-11-0
1310-73-2
7774-29-0

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Material Safety Data Sheet
Nessler's reagent, APHA for Nitrogen (Ammonia)


Section 1 - Chemical Product and Company Identification
MSDS Name:
Nessler's reagent, APHA for Nitrogen (Ammonia)
Catalog Numbers:
Q00671
Synonyms:
Nessler's solution APHA
Company Identification:
Qorpak
1195 Washington Pike
Bridgeville, PA 15017
Company Phone Number:
(412) 257-3100
Emergency Phone Number:
(800) 424-9300
CHEMTREC Phone Number:
(800) 424-9300

Section 2 - Composition, Information on Ingredients

Percent
CAS# Chemical Name:
7732-18-5 Water balance
7681-11-0 Potassium iodide 7
1310-73-2 Sodium hydroxide 16
7774-29-0 Mercuric iodide 10




Section 3 - Hazards Identification

EMERGENCY OVERVIEW
Appearance: yellow
These solutions are classified by DOT as Poison-B. Causes severe eye and skin irritation.
Causes severe respiratory tract irritation. May cause sensitization by inhalation and by skin
contact.
Target Organs: none known.
Potential Health Effects
Eye:
Irritation, lacrimation, redness, tearing, burns, damage vision.
Material Safety Data Sheet
Nessler's reagent, APHA for Nitrogen (Ammonia)

Skin:
Causes redness, irritation, sensitization dermatitis. Mercury is absorbed through skin producing gastrointestinal and
kidney damage. Severe alkali burns can occur.
Ingestion:
Burns, pain, vomiting, diarhhea, metallic taste, death from electrolyte loss/imbalance, vascular collapse, renal failure;
alkali burns, perforation.
Inhalation:
Corrosive/neurotoxin/neprhotoxin.
Chronic:
May cause dermatitis and conjunctivitis. Sensitization, neuropathologic disturbances, kidney damage, mutagenic and
reproductive effects.

Section 4 - First Aid Measures
Eyes:
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower lids until
chemical is gone. Get medical aid at once. Cover burns with loose sterile non-medicated bandages.
Skin:
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing
contaminated clothing and shoes. Cover burns with a dry sterile bandage (secure, not tight).
Ingestion:
Do NOT induce vomiting. Get medical aid at once. Give conscious victim large quantities of water to dilute.
Inhalation:
Give artificial respiration if necessary. Get medical aid. Keep victim warm, at rest. Move victim to fresh air. Maintain
airway, medical personnel may administer oxygen.
Notes to Physician:
Treat symptomatically and supportively.

Section 5 - Fire Fighting Measures
General Information:
Negligible fire and explosion hazard when exposed to heat or flame. Move container if possible, cool with fog or
spray. Water spray may be used to absorb corrosive vapors. Avoid breathing corrosive poisonous vapors.
Extinguishing Media:
In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Autoignition Temperature:
Not applicable.
Flash Point:
non-flammable
NFPA Rating:
CAS# 7732-18-5: Not published.
CAS# 7681-11-0: Not published.
CAS# 1310-73-2: Not published.
CAS# 7774-29-0: Not published.
Explosion Limits:
Lower: No information Upper: No information
Material Safety Data Sheet
Nessler's reagent, APHA for Nitrogen (Ammonia)


Section 6 - Accidental Release Measures
General Information:
Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Keep out of sewers/drains. Absorb with intert absorbent (vermiculite, diatomaceous earth) and scoop into plastic or
glass container, label as "POISON" and "CORROSIVE" for later disposal.

Section 7 - Handling and Storage
Handling:
Wear gloves, protective clothing when handling.
Storage:
Store capped at room temperature in amber glass.

Section 8 - Exposure Controls, Personal Protection
Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Provide
local exhaust ventilation to meet OSHA exposure limits.
Exposure Limits


Chemical Name: ACGIH NIOSH OSHA
None of the components None of the components
None of the components
Water
are on this list. are on this list.
are on this list.
None of the components None of the components
None of the components
Potassium iodide
are on this list. are on this list.
are on this list.
None of the components 2 mg/m3 TWA;
None of the components
Sodium hydroxide
are on this list.
are on this list.
None of the components None of the components
None of the components
Mercuric iodide
are on this list. are on this list.
are on this list.
OSHA Vacated PELs

Personal Protective Equipment
Eyes:
Do not wear contact lenses when working with chemicals. Wear splash-proof safety goggles.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Not required for normal use.

Section 9 - Physical and Chemical Properties
Physical State: Clear liquid
Material Safety Data Sheet
Nessler's reagent, APHA for Nitrogen (Ammonia)
Color: yellow
Odor: odorless
pH: alkaline
Vapor Pressure: No information found.
Vapor Density: No information found.
Evaporation Rate: Viscosity: No information found.
Boiling Point: > 100掳C (> 212.00掳F)
Freezing/Melting Point: No information found.
Decomposition Temperature: No information found.
Solubility in water: Soluble.
Specific Gravity/Density: >1
Molecular Formula: mixture
Molecular Weight No information found.


Section 10 - Stability and Reactivity
Chemical Stability:
Stable under normal temperatures and pressures up to boiling point.
Conditions to Avoid:
Incompatible materials.
Incompatibilities with Other Materials
Oxidizing materials, acids, water reactive substances (e.g. sulfuric acid, sodium metal, potassium metal, calcium
carbide), perchlorates, diazonium salts, sodium, potassium, acrolein, chloronitrotoluenes, nitromethane, maleic
anhydride, nitropropanes, pentol, tetrachlorobenzene/methyl alcohol, organics, fluorides of chlorine/bromine,
nitroethane.
Hazardous Decomposition Products
Potassium iodide, mercuric iodide, sodium hydroxide, Boiling emits there as hazardous mist; dried and heated evolves
toxic vapors..
Hazardous Polymerization
Will not occur.

Section 11 - Toxicological Information
RTECS:
CAS# 7732-18-5: ZC0110000.
CAS# 7681-11-0: TT2975000.
CAS# 1310-73-2: WB4900000.
CAS# 7774-29-0: OW5250000.
Material Safety Data Sheet
Nessler's reagent, APHA for Nitrogen (Ammonia)

LD50/LC50:
CAS# 7732-18-5:
Oral, rat: LD50 = >90 mL/kg.
CAS# 7681-11-0:
No information found.CAS# 1310-73-2:
No information found.CAS# 7774-29-0:
Oral, mouse: LD50 = 17 mg/kg
Oral, rat: LD50 = 18 mg/kg
Skin, rat: LD50 = 75 mg/kg.

Carcinogenicity:
CAS# 7732-18-5: Not listed as a carcinogen by ACGIH, IARC, NIOSH, NTP, OSHA, or CA Prop 65.
CAS# 7681-11-0: Not listed as a carcinogen by ACGIH, IARC, NIOSH, NTP, OSHA, or CA Prop 65.
CAS# 1310-73-2: Not listed as a carcinogen by ACGIH, IARC, NIOSH, NTP, OSHA, or CA Prop 65.
CAS# 7774-29-0: Not listed as a carcinogen by ACGIH, IARC, NIOSH, NTP, OSHA, or CA Prop 65.
Epidemiology:
Teratogenicity:
Reproductive:
Mercuric iodide, potassium iodide cause reproductive effects (See RTECS).
Mutagenicity
Potassium iodide, sodium hydroxide cause mutagenic effect (See RTECS).
Neurotoxicity

Section 12 - Ecological Information
Ecotoxicity:
No information found.
Environmental:
No data available.
Physical:
No data available.
Other:
None.
Material Safety Data Sheet
Nessler's reagent, APHA for Nitrogen (Ammonia)


Section 13 - Disposal Considerations
Dispose of in accordance with federal, state, and local regulations.

Section 14 - Transport Information

US DOT
Shipping Name: Corrosive liquid, Toxic, n.o.s.
(Sodium hydroxide, Mercuric iodide)




Hazard Class: 8
UN Number: UN2922
Packing Group: PG II

Section 15 - Regulatory Information

US Federal
TSCA
CAS# 7732-18-5 is listed on the TSCA Inventory.
CAS# 7681-11-0 is listed on the TSCA Inventory.
CAS# 1310-73-2 is listed on the TSCA Inventory.
CAS# 7774-29-0 is listed on the TSCA Inventory.
SARA Reportable Quantities (RQ)
CAS# 1310-73-2: final RQ = 1000 pounds (454 kg)
CERCLA/SARA Section 313
None of the components are on this list.
OSHA - Highly Hazardous
None of the components are on this list.
US State
State Right to Know
Sodium hydroxide can be found on the following state Right-to-Know lists: California, New Jersey, Florida,
Pennsylvania, Minnesota, Massachusetts.
Mercuric iodide can be found on the following state Right-to-Know lists: New Jersey.
California Regulations

European/International Regulations
Canadian DSL/NDSL
CAS# 7732-18-5 is listed on Canada's DSL List.
CAS# 7681-11-0 is listed on Canada's DSL List.
CAS# 1310-73-2 is listed on Canada's DSL List.
CAS# 7774-29-0 is listed on Canada's DSL List.
Material Safety Data Sheet
Nessler's reagent, APHA for Nitrogen (Ammonia)

Canada Ingredient Disclosure List
CAS# 7732-18-5 is not listed on Canada's Ingredient Disclosure List.
CAS# 7681-11-0 is listed on Canada's Ingredient Disclosure List.
CAS# 1310-73-2 is listed on Canada's Ingredient Disclosure List.
CAS# 7774-29-0 is listed on Canada's Ingredient Disclosure List.

Section 16 - Other Information
MSDS Creation Date: December 20, 1999
Revision Date: August 2, 2004


Information in this MSDS is from available published sources and is believed to be accurate. No warranty, express or
implied, is made and Qorpak assumes no liability resulting from the use of this MSDS. The user must determine
suitability of this information for his application.

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