ICSC 1370 - SODIUM CHROMATE

SODIUM CHROMATE	ICSC: 1370 (April 2013)
Disodium chromate (VI) Chromic acid, disodium salt Disodium chromium tetraoxide

CAS #: 7775-11-3

UN #: 3288

EC Number: 231-889-5

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible but enhances combustion of other substances.	NO contact with combustible substances.	In case of fire in the surroundings, use appropriate extinguishing media.

PREVENT DISPERSION OF DUST! AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Burning sensation. Sore throat. Cough. Wheezing. Laboured breathing.	Use closed system or ventilation.	Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin	Redness. Pain. Skin burns.	Protective gloves. Protective clothing.	First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. Refer for medical attention .
Eyes	Redness. Pain. Blurred vision. Severe deep burns.	Wear face shield or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion	Nausea. Vomiting. Abdominal pain. Burning sensation. Diarrhoea. Shock or collapse.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.	According to UN GHS Criteria DANGER May intensify fire; oxidizer Toxic if swallowed Harmful in contact with skin Fatal if inhaled Causes severe skin burns and eye damage May cause allergy or asthma symptoms or breathing difficulties if inhaled May cause an allergic skin reaction May cause genetic defects May cause cancer May damage fertility or the unborn child Causes damage to kidneys Causes damage to the nose through prolonged or repeated exposure if inhaled Very toxic to aquatic life with long lasting effects Transportation UN Classification UN Hazard Class: 6.1; UN Pack Group: II
STORAGE
Provision to contain effluent from fire extinguishing. Separated from combustible substances, reducing agents and food and feedstuffs. Dry. Well closed. Store in an area without drain or sewer access.
PACKAGING
Do not transport with food and feedstuffs.

SODIUM CHROMATE

ICSC: 1370

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance YELLOW HYGROSCOPIC CRYSTALS. Physical dangers Chemical dangers The solution in water is a weak base. The substance is a strong oxidant. It reacts with combustible and reducing materials.	Formula: Na₂CrO₄ Molecular mass: 162 Melting point: 762°C Density: 2.7 g/cm³ Solubility in water, g/100ml at 20°C: 53 (good)

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
YELLOW HYGROSCOPIC CRYSTALS.

Physical dangers

Chemical dangers
The solution in water is a weak base. The substance is a strong oxidant. It reacts with combustible and reducing materials.

Formula: Na₂CrO₄
Molecular mass: 162
Melting point: 762°C
Density: 2.7 g/cm³
Solubility in water, g/100ml at 20°C: 53 (good)

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion. Effects of short-term exposure The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. The substance may cause effects on the kidneys and liver. This may result in tissue lesions.	Inhalation risk A harmful concentration of airborne particles can be reached quickly when dispersed. Effects of long-term or repeated exposure Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation may cause asthma. Repeated or prolonged inhalation may cause nasal ulceration. This may result in perforation of the nasal septum. The substance may have effects on the kidneys. This may result in kidney impairment. This substance is carcinogenic to humans. Animal tests show that this substance possibly causes toxicity to human reproduction or development.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. The substance may cause effects on the kidneys and liver. This may result in tissue lesions.

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed.

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation may cause asthma. Repeated or prolonged inhalation may cause nasal ulceration. This may result in perforation of the nasal septum. The substance may have effects on the kidneys. This may result in kidney impairment. This substance is carcinogenic to humans. Animal tests show that this substance possibly causes toxicity to human reproduction or development.

OCCUPATIONAL EXPOSURE LIMITS
TLV: (as Cr(VI), inhalable fraction): 0.0002 mg/m³, as TWA; 0.0005 mg/m³ as STEL; A1 (confirmed human carcinogen); (skin); (DSEN); (RSEN). EU-OEL: (as Cr): 0.005 mg/m³ as TWA; (see Notes). MAK: (inhalable fraction): skin absorption (H); sensitization of skin (SH); carcinogen category: 1; germ cell mutagen group: 2

ENVIRONMENT
The substance is very toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. It is strongly advised not to let the chemical enter into the environment.

NOTES
Do NOT take working clothes home. Rinse contaminated clothing with plenty of water because of fire hazard. Anyone who has shown symptoms of asthma due to this substance should avoid all further contact. The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. The recommendations on this Card also apply to sodium chromate tetrahydrate (CAS No. 10034-82-9). EU-OEL limit value 0.010 mg/m³ until 17 January 2025. Limit value: 0.025 mg/m³ for welding or plasma cutting processes or similar work processes that generate fume until 17 January 2025.

NOTES

Do NOT take working clothes home.
Rinse contaminated clothing with plenty of water because of fire hazard.
Anyone who has shown symptoms of asthma due to this substance should avoid all further contact.
The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential.
The recommendations on this Card also apply to sodium chromate tetrahydrate (CAS No. 10034-82-9).
EU-OEL limit value 0.010 mg/m³ until 17 January 2025. Limit value: 0.025 mg/m³ for welding or plasma cutting processes or similar work processes that generate fume until 17 January 2025.

ADDITIONAL INFORMATION

EC Classification
Symbol: T+, N; R: 45-46-60-61-21-25-26-34-42/43-48/23-50/53; S: 53-45-60-61; Note: E, 3

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    See Also:
       Toxicological Abbreviations