NILE
CHEMICALS
NILE
CHEMICALS
Section
1: Chemical Product and Company Identification
Product
Name: Potassium dichromate
CAS#:
7778-50-9
Synonym:
Bichromate of potash;
Dipotassium Dichromate; Potassium bichromate; Potassium dichromate (VI)
Chemical
Formula: K2Cr2O7
Section
2: Composition and Information on Ingredients Composition:
Name
CAS #
% by Weight
Potassium
dichromate
7778-50-9
100
Toxicological
Data on Ingredients: Potassium
dichromate LD50: Not available. LC50: Not available.
Section
3: Hazards Identification Potential Acute Health Effects:
Extremely
hazardous in case of skin contact (permeator). Very hazardous in case of skin
contact (irritant), of eye contact (irritant), of ingestion, . Hazardous in case
of skin contact (corrosive, sensitizer), of eye contact (corrosive), of
inhalation (lung irritant). Prolonged exposure may result in skin burns and
ulcerations. Over-exposure by inhalation may cause respiratory irritation.
Severe over-exposure can result in death. Inflammation of the eye is
characterized by redness, watering, and itching.
Skin
inflammation is characterized by itching, scaling, reddening, or, occasionally,
blistering.
Potential
Chronic Health Effects:Slightly
hazardous in case of skin contact (sensitizer). CARCINOGENIC EFFECTS: Classified
A1 (Confirmed for human.) by ACGIH. MUTAGENIC EFFECTS: Mutagenic for mammalian
somatic cells. Mutagenic for bacteria and/or yeast.
TERATOGENIC EFFECTS: Not available. DEVELOPMENTAL TOXICITY: Not
available. The substance may be toxic to blood, kidneys, lungs, liver, upper
respiratory tract, skin, eyes. Repeated or prolonged exposure to the substance
can produce
target
organs damage. Repeated exposure to a highly toxic material may produce general
deterioration of health by an accumulation in one or many human organs.
Section
4: First Aid Measures Eye Contact:
Check
for and remove any contact lenses. Immediately flush eyes with running water for
at least 15 minutes, keeping eyelids open. Cold water may be used. Do not use an
eye ointment. Seek medical attention.
Skin
Contact: After contact
with skin, wash immediately with plenty of water. Gently and thoroughly wash the
contaminated skin with running water and non-abrasive soap. Be particularly
careful to clean folds, crevices, creases and groin. Cold water may be used.
Cover the irritated skin with an emollient. If irritation persists, seek medical
attention.
Serious
Skin Contact: Wash with a
disinfectant soap and cover the contaminated skin with an anti-bacterial cream.
Seek medical attention.
Inhalation:
Allow the victim to rest
in a well ventilated area. Seek immediate medical attention.
Serious
Inhalation: Evacuate the
victim to a safe area as soon as possible. Loosen tight clothing such as a
collar, tie, belt or waistband. If breathing is difficult, administer oxygen. If
the victim is not breathing, perform mouth-to-mouth resuscitation. Seek medical
attention.
Ingestion:Do
not induce vomiting. Loosen tight clothing such as a collar, tie, belt or
waistband. If the victim is not breathing, perform mouth-to-mouth resuscitation.
Seek immediate medical attention.
Serious
Ingestion: Not available.
Section
5: Fire and Explosion Data
Flammability
of the Product: Non-flammable.
Auto-Ignition
Temperature: Not
applicable.
Flash
Points: Not applicable.
Flammable
Limits: Not applicable.
Products
of Combustion: Not
available.
Fire
Hazards in Presence of Various Substances: combustible
materials, organic materials
Explosion
Hazards in Presence of Various Substances:
Risks
of explosion of the product in presence of mechanical impact: Not available.
Risks of explosion of the product in presence of static discharge: Not
available.
Fire
Fighting Media and Instructions: Not
applicable.
Special
Remarks on Fire Hazards:
Dangerous
in contact with organic materials. Contact with combustible or organic materials
may cause fire. When heated to decomposition it emits toxic fumes of potassium
oxide
Special
Remarks on Explosion Hazards: Reacts
explosively with hydrazine, and anydrous hydroxylamine.
Section
6: Accidental Release Measures
Small
Spill: Use appropriate
tools to put the spilled solid in a convenient waste disposal container.
Large
Spill: Oxidizing material.
Stop leak if without risk. Avoid contact with a combustible material (wood,
paper, oil, clothing). Keep substance damp using water spray. Do not touch
spilled material. Prevent entry into sewers, basements or confined areas; dike
if needed. Call for assistance on disposal. Be careful that the product is not
present at a concentration level above TLV. Check TLV on the MSDS and with local
authorities.
Section
7: Handling and Storage Precautions:
Keep
locked up Keep container dry. Keep away from heat. Keep away from sources of
ignition. Keep away from combustible material Do not breathe dust. Never add
water to this product In case of insufficient ventilation, wear suitable
respiratory equipment If you feel unwell, seek medical attention and show the
label when possible. Avoid contact with skin and eyes Keep away from
incompatibles such as reducing agents, combustible materials, organic materials.
Storage:
Oxidizing materials should
be stored in a separate safety storage cabinet or room.
Section
8: Exposure Controls/Personal Protection Engineering Controls: Use process enclosures, local exhaust ventilation, or other
engineering controls to keep airborne levels below recommended
exposure
limits. If user operations generate dust, fume or mist, use ventilation to keep
exposure to airborne contaminants below the exposure limit.
Personal
Protection: Splash
goggles. Lab coat. Dust respirator. Be sure to use an approved/certified
respirator or equivalent. Gloves.
Personal
Protection in Case of a Large Spill:
Splash
goggles. Full suit. Dust respirator. Boots. Gloves. A self contained breathing
apparatus should be used to avoid inhalation of the product. Suggested
protective clothing might not be sufficient; consult a specialist BEFORE
handling this product.
Exposure
Limits:
CEIL:
0.1 (mg(CrO3)/m ) from OSHA (PEL) [United States] TWA: 0.05 (mg(Cr)/m) from
ACGIH (TLV) [United States]Consult local authorities for acceptable exposure
limits.
Section
9: Physical and Chemical Properties
Physical
state and appearance: Solid.
Odor:
Odorless.
Taste:
Bitter. metallic.
Molecular
Weight: 294.2 g/mole
Color:
Orange-Red.
pH
(1% soln/water): 4
[Acidic.]
Boiling
Point: Decomposition
temperature: 500°C (932°F)
Melting
Point: 398°C (748.4°F)
Critical
Temperature: Not
available.
Specific
Gravity: 2.676 @ 25 deg.
C(Water = 1) Bulk Density: 1.6 g/m3 @ 20 deg. C
Vapor
Pressure: Not applicable.
Vapor
Density: Not available.
Volatility:
Not available.
Odor
Threshold: Not available.
Water/Oil
Dist. Coeff.: Not
available.
Ionicity
(in Water): Not available.
Dispersion
Properties: See solubility
in water.
Solubility:
Easily soluble in hot
water. Soluble in cold water. Solubility in water: 4.9 g/100 ml water @ 0 deg. C
Solubility in water: 10.5% (w/w) @ 20 deg. C Solubility in water: 102 g/100 ml
water @ 100 deg. C Insoluble in alcohol.
Section
10: Stability and Reactivity Data
Stability:
The product is stable.
Instability
Temperature: Not
available.
Conditions
of Instability: Incompatible
materials
Incompatibility
with various substances: Reactive
with reducing agents, combustible materials, organic materials, metals, acids,
alkalis.
Corrosivity:
Non-corrosive in presence
of glass.
Special
Remarks on Reactivity: Reacts
violently or ignites with ethylene glycol above 100 deg. C Other Incompatibles:
combustible, organic, or other readily oxidizable materials such as paper, wood,
sulfur, aluminum, iron, tungsten, sulfuric acid + acetone, born, glycol, sulfur,
plastics
Special
Remarks on Corrosivity: Not
available.
Polymerization:
No.
Section
11: Toxicological Information
Routes
of Entry: Absorbed through
skin. Dermal contact. Eye contact. Inhalation. Ingestion.
Toxicity
to Animals:Acute oral
toxicity (LD50): 25 mg/kg [Rat]. Acute dermal toxicity (LD50): 14 mg/kg
[Rabbit].
Chronic
Effects on Humans:CARCINOGENIC
EFFECTS: Classified A1 (Confirmed for human.) by ACGIH. MUTAGENIC EFFECTS:
Mutagenic for mammalian somatic cells. Mutagenic for bacteria and/or yeast. May
cause damage to the following organs: blood, kidneys, lungs, liver, upper
respiratory tract, skin, eyes.
Other
Toxic Effects on Humans: Extremely
hazardous in case of skin contact (permeator). Very hazardous in case of skin
contact (irritant), of ingestion, Hazardous in case of skin contact (corrosive,
sensitizer), of eye contact (corrosive), of inhalation (lung irritant).
Special
Remarks on Toxicity to Animals: Lowest
Published Lethal Dose: LDL [Man] - Route: Oral; Dose: 143 mg/kg LDL [Child] -
Route: Oral; Dose 26 mg/kg
Special
Remarks on Chronic Effects on Humans:
Passes
through the placental barrier in animal. May cause adverse reproductive effects
and birth defects (teratogenic). May affect genetic material (mutagenic)
Section
12: Ecological Information Ecotoxicity:
Ecotoxicity
in water (LC50): 75 mg/l 96 hours [Fish (Striped bass)]. 1.5 mg/l 24 hours
[Daphnia (daphnia)]. 17.3 mg/l 11 hours [Fish (Fathead minnow)].
BOD5
and COD: Not available.
Products
of Biodegradation: Possibly
hazardous short term degradation products are not likely. However, long term
degradation products may arise.
Toxicity
of the Products of Biodegradation: The
products of degradation are more toxic.
Special
Remarks on the Products of Biodegradation:
Dangerous
to aquatic life in high concentrations. Chromium probably occurs as the
insoluble (CrIII) oxide (Cr2O3.nH2O) in the soil, as the organic matter in the
soil is expected to reduce any soluble chromate to insoluble chromic oxide
(Cr2O3). Chromium in the soil can be transported to the atmosphere by way of
aerosol formation. Chromium is also transported from the soil through runoff and
leaching of water. Most of the chromium in surface waters may be present in
particulate from as
sediment.
Some of the particulate chromium would remain as suspended matter and ultimately
be deposited in the sediments. Chromium present usually as (CrIII) in the soil
and is characteriszed by its lack of mobility, except in cases where Cr(VI) is
involved. Chromium (VI) of natural origin is rarely found.
Section
13: Disposal Considerations Waste Disposal:
Waste
must be disposed of in accordance with federal, state and local environmental
control regulations.
Section
14: Transport Information
DOT
Classification:
CLASS
5.1: Oxidizing material. CLASS 6.1: Poisonous material.
Identification:
: Toxic Solids, Oxidizing,
n.o.s (Potassium Dichromate) UNNA: 3086 PG: I
Special
Provisions for Transport: Not
available.
Section
15: Other Regulatory Information Federal and State Regulations:
HMIS
(U.S.A.):
Health
Hazard: 4
Fire
Hazard: 0
Reactivity:
0
Personal
Protection: E
National
Fire Protection Association (U.S.A.):
Health:
4
Flammability:
0
Reactivity:
0
Specific
hazard:
Protective
Equipment:
Gloves.
Lab coat. Dust respirator. Be sure to use an approved/certified respirator or
equivalent. Wear appropriate respirator when ventilation is inadequate. Splash
goggles.
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