International Chemical Safety Cards

LEAD CHROMATE (VI) ICSC: 0003

LEAD CHROMATE (VI)
Plumbous Chromate
Chromic Acid, Lead (II) Salt (1:1)
Chrome Yellow
PbCrO4
Molecular mass: 323.2
CAS # 7758-97-6
RTECS # GB2975000
ICSC # 0003
EC # 082-004-00-2
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.

In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION


 
EXPOSURE
PREVENT DISPERSION OF DUST! AVOID ALL CONTACT! AVOID EXPOSURE OF (PREGNANT) WOMEN! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!
IN ALL CASES CONSULT A DOCTOR!
INHALATION Cough. Headache. Laboured breathing. Nausea.
Local exhaust or breathing protection.
Fresh air, rest.
SKIN Skin burns.
Protective gloves. Protective clothing.
Rinse and then wash skin with water and soap.
EYES Redness.
Safety goggles, or eye protection in combination with breathing protection if powder.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
INGESTION Abdominal pain. Constipation. Cough. Diarrhoea. Vomiting. Weakness.
Do not eat, drink, or smoke during work.
Rinse mouth. give plenty of water to drink, Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention.
SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
Vacuum spilled material. Wipe up remainder in dry container, then remove to safe place. (extra personal protection: P3 filter respirator for toxic particles).
Separated from strong oxidants.
Unbreakable packaging; put breakable packaging into closed unbreakable container.
Xn symbol
R: 33-40
S: 22
SEE IMPORTANT INFORMATION ON BACK
ICSC: 0003 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

LEAD CHROMATE (VI) ICSC: 0003

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PHYSICAL STATE; APPEARANCE:
YELLOW TO ORANGE-YELLOW CRYSTALLINE POWDER

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes on heating producing toxic fumes including lead oxides. Reacts with strong oxidants, hydrogen peroxide, sodium and potassium. Reacts with aluminium dinitronaphthalene, iron(III) hexacyanoferrate(IV). Reacts with organics at elevated temperature causing fire hazard.

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV: ppm; 0.05 mg/m3 (as TWA) A2 as Pb (ACGIH 1991-1992)
TLV (as Cr): 0.012 mg/m3 A2 (ACGIH 1991-1992)


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol and dust, by ingestion.

INHALATION RISK:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on spraying or when dispersed, especially if powdered.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the respiratory tract.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis, and irritation, chronic ulcers, eczema. Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation exposure may cause asthma. Lungs may be affected by repeated or prolonged exposure to dust particles. The substance may have effects on the skin, kidneys , resulting in tissue lesions. This substance is carcinogenic to humans. May cause genetic damage in humans. May cause reproductive toxicity in humans.
PHYSICAL
PROPERTIES
 Boiling point (decomposes): °C
Melting point: 844°C
 Relative density (water = 1): 6.3
Solubility in water, g/100 ml at 25°C: 0.058
ENVIRONMENTAL
DATA
NOTES
Temperature of decomposition unknown in literature. Lead chromate pigments may contain appreciable quantities of water-soluble lead compounds. Marginal nutritional status increases susceptibility to lead toxicity. Toxic fumes (lead and chromium compounds) are also liberated during welding, cutting and heating of material treated with lead chromate VI. Depending on the degree of exposure, periodic medical examination is indicated. Do NOT take working clothes home. Lead chromate (VI) occurs in nature as the minerals crocoite, phoenicochroite. Cologne yellow, King's yellow, Leipzig yellow, Paris yellow, C.I. Pigment yellow 34, C.I. 77600 are trade names.
Transport Emergency Card: TEC (R)-221
ADDITIONAL INFORMATION


ICSC: 0003 LEAD CHROMATE (VI)
© IPCS, CEC, 1993
IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use.