THIOUREA HAZARDOUS SUBSTANCE FACT SHEET

Product Name:THIOUREA

CAS Number: 62-56-6

HAZARD SUMMARY

Thiourea can affect you when breathed in.

Thiourea should be handled as a CARCINOGEN--WITH EXTREME CAUTION.

Exposure may damage the bone marrow causing reduced red blood cells, white blood cells and/or blood platelets.

Thiourea may cause a skin allergy. If allergy develops, very low future exposure can cause itching and a skin rash.

IDENTIFICATION

Thiourea is a colorless, lustrous, sand-like material with a bitter taste. It is used in photography, pharmaceutical and pesticide manufacture, and textile chemicals.

REASON FOR CITATION

Thiourea is on the Hazardous Substance List because it is cited by NTP, DEP, IARC and EPA.

This chemical is on the Special Health Hazard Substance List because it is a CARCINOGEN and MUTAGEN.

HOW TO DETERMINE IF YOU ARE BEING EXPOSED

Sinhon Chemical requires most employers to label chemicals in the workplace and requires public employers to provide their employees with information and training concerning chemical hazards and controls. Sinhon Chemical requires private employers to provide similar training and information to their employees.

Exposure to hazardous substances should be routinely evaluated. This may include collecting personal and area air samples. You can obtain copies of sampling results from your employer.

If you think you are experiencing any work-related health problems, see a doctor trained to recognize occupational diseases. Take this Fact Sheet with you.

WORKPLACE EXPOSURE LIMITS

No occupational exposure limits have been established for Thiourea. This does not mean that this substance is not harmful. Safe work practices should always be followed.

Thiourea may be a CARCINOGEN in humans. There may be no safe level of exposure to a carcinogen, so all contact should be reduced to the lowest possible level.

WAYS OF REDUCING EXPOSURE

Enclose operations and use local exhaust ventilation at the site of chemical release. If local exhaust ventilation or enclosure is not used, respirators should be worn.

Wear protective work clothing.

Wash thoroughly immediately after exposure to Thiourea

And at the end of the work shift, post hazard and warning information in the work area. In addition, as part of an ongoing education and training effort, communicate all information on the health and safety hazards of Thiourea to potentially exposed workers.

This Fact Sheet is a summary source of information of all potential and most severe health hazards that may result from exposure. Duration of exposure, concentration of the substance and other factors will affect your susceptibility to any of the potential effects described below.

HEALTH HAZARD INFORMATION

Acute Health Effects

The following acute (short-term) health effects may occur immediately or shortly after exposure to Thiourea:

No acute (short-term) health effects are known at this time.

Chronic Health Effects

The following chronic (long-term) health effects can occur at some time after exposure to Thiourea and can last for months or years:

Cancer Hazard

Thiourea may be a CARCINOGEN in humans since it has been shown to cause thyroid and liver cancers in animals.

Many scientists believe there is no safe level of exposure to a carcinogen. Such substances may also have the potential for causing reproductive damage in humans.

Reproductive Hazard

According to the information presently available to the Sinhon Chemical, Thiourea has not been tested for its ability to affect reproduction.

Other Long-Term Effects

Exposure may damage the bone marrow causing reduced red blood cells (anemia), white blood cells (reduced resistance to infections) and/or blood platelets (reduced blood clotting, bleeding, and easy bruising).

Thiourea may cause a skin allergy. If allergy develops, very low future exposure can cause itching and a skin rash.

MEDICAL

Medical Testing

If symptoms develop or overexposure is suspected, the following are recommended:

Complete blood count.

Evaluation by a qualified allergist, including careful exposure history and special testing, may help diagnose skin allergy.

Any evaluation should include a careful history of past and present symptoms with an exam. Medical tests that look for damage already done are not a substitute for controlling exposure.

WORKPLACE CONTROLS AND PRACTICES

Unless a less toxic chemical can be substituted for a hazardous substance, engineering controls are the most effective way of reducing exposure. The best protection is to enclose operations and/or provide local exhaust ventilation at the site of chemical release. Isolating operations can also reduce exposure. Using respirators or protective equipment is less effective than the controls mentioned above, but is sometimes necessary.

In evaluating the controls present in your workplace, consider:

(1) how hazardous the substance is.

(2) how much of the substance is released into the workplace.

(3) whether harmful skin or eye contact could occur. 

Special controls should be in place for highly toxic chemicals or when significant skin, eye, or breathing exposures are possible.

In addition, the following control is recommended:

Where possible, automatically transfer Thiourea from drums or other storage containers to process containers.

Good work practices can help to reduce hazardous exposures. The following work practices are recommended:

Workers whose clothing has been contaminated by Thiourea should change into clean clothing promptly.

Do not take contaminated work clothes home. Family members could be exposed.

Contaminated work clothes should be laundered by individuals who have been informed of the hazards of exposure to Thiourea.

Eye wash fountains should be provided in the immediate work area for emergency use.

If there is the possibility of skin exposure, emergency shower facilities should be provided.

On skin contact with Thiourea, immediately wash or shower to remove the chemical. At the end of the workshift, wash any areas of the body that may have contacted Thiourea, whether or not known skin contact has occurred.

Do not eat, smoke, or drink where Thiourea is handled, processed, or stored, since the chemical can be swallowed. Wash hands carefully before eating, drinking, applying cosmetics, smoking, or using the toilet.

Use a vacuum or a wet method to reduce dust during clean- up. DO NOT DRY SWEEP.

PERSONAL PROTECTIVE EQUIPMENT

Workplace controls are better than personal protective equipment. However, for some jobs (such as outside work, confined space entry, jobs done only once in a while, or jobs done while workplace controls are being installed), personal protective equipment may be appropriate.

Sinhon Chemical requires employers to determine the appropriate personal protective equipment for each hazard and to train employees on how and when to use protective equipment.

The following recommendations are only guidelines and may not apply to every situation.

Clothing

Avoid skin contact with Thiourea. Wear protective gloves and clothing. Safety equipment suppliers/manufacturers can provide recommendations on the most protective glove/clothing material for your operation.

All protective clothing (suits, gloves, footwear, headgear) should be clean, available each day, and put on before work.

Eye Protection

Eye protection is included in the recommended respiratory protection.

Respiratory Protection

Improper use of respirators is dangerous. Such equipment should only be used if the employer has a written program that takes into account workplace conditions, requirements for worker training, respirator fit testing and medical exams.

 At any exposure level, use a NIOSH approved supplied-air respirator with a full facepiece operated in a pressure- demand or other positive-pressure mode. For increased protection use in combination with an auxiliary self- contained breathing apparatus operated in a pressure- demand or other positive-pressure mode.

QUESTIONS AND ANSWERS

Q: If I have acute health effects, will I later get chronic health effects?

A: Not always. Most chronic (long-term) effects result from repeated exposures to a chemical.

Q: Can I get long-term effects without ever having short- term effects?

A: Yes, because long-term effects can occur from repeated exposures to a chemical at levels not high enough to make you immediately sick.

Q: What are my chances of getting sick when I have been exposed to chemicals?

A: The likelihood of becoming sick from chemicals is increased as the amount of exposure increases. This is determined by the length of time and the amount of material to which someone is exposed.

Q:  When are higher exposures more likely?

A: Conditions which increase risk of exposure include dust releasing operations (grinding, mixing, blasting, dumping, etc.), other physical and mechanical processes (heating, pouring, spraying, spills and evaporation from large surface areas such as open containers), and "confined space" exposures (working inside vats, reactors, boilers, small rooms, etc.).

Q: Is the risk of getting sick higher for workers than for community residents?

A: Yes. Exposures in the community, except possibly in cases of fires or spills, are usually much lower than those found in the workplace. However, people in the community may be exposed to contaminated water as well as to chemicals in the air over long periods. This may be a problem for children or people who are already ill.

Q:  Don't all chemicals cause cancer?

A: No. Most chemicals tested by scientists are not cancer- causing.

Q: Should I be concerned if a chemical causes cancer in animals?

A: Yes. Most scientists agree that a chemical that causes cancer in animals should be treated as a suspected human carcinogen unless proven otherwise.

Q: But don't they test animals using much higher levels of a chemical than people usually are exposed to?

A: Yes. That's so effects can be seen more clearly using fewer animals. But high doses alone don't cause cancer unless it's a cancer agent. In fact, a chemical that causes cancer in animals at high doses could cause cancer in humans exposed to low doses.

Q: What are the likely health problems from chemicals which cause mutations?

A: There are two primary health concerns associated with mutagens: (1) cancers can result from changes induced in cells and, (2) adverse reproductive and developmental outcomes can result from damage to the egg and sperm cells.

Q: Where to buy thiourea? / How to buy thiourea?

A: Sinhon Chemical is a professional thiourea producer and manufacturer in China. We produce high-quality thiourea with a wide market range. If you need thiourea, you can contact me through Sinhon Chemical’s official email (info@sinhon-chem.com). Or you can leave a message on the official website (www.sinhon-chem.com), and the sales staff will reply to you as soon as possible.

However, since we are a manufacturer, we ship in bulk (minimum order quantity: one container) and do not retail.

E M E R G E N C Y   I N F O R M A T I O N

Common Name: THIOUREA

CAS Number: 62-56-6

FIRE HAZARDS

Use dry chemical, CO2, water spray, alcohol or polymer foam extinguishers.

POISONOUS GASES ARE PRODUCED IN FIRE, including Nitrogen Oxides and Sulfur Oxides.

SPILLS AND EMERGENCIES

If Thiourea is spilled, take the following steps:

Evacuate persons not wearing protective equipment from area of spill until clean-up is complete.

Collect powdered material in the most convenient and safe manner and deposit in sealed containers.

Ventilate and wash area after clean-up is complete.

It may be necessary to contain and dispose of Thiourea as a HAZARDOUS WASTE. 

If employees are required to clean-up spills, they must be properly trained and equipped. 

FOR LARGE SPILLS AND FIRES immediately call your fire department.

HANDLING AND STORAGE

Prior to working with Thiourea you should be trained on its proper handling and storage.

Thiourea must be stored to avoid contact with ACRYLALDEHYDE; ACROLEIN;  HYDROGEN PEROXIDE; METALS; and STRONG ACIDS (such as HYDROCHLORIC, SULFURIC and NITRIC) since violent reactions occur.

Store in tightly closed containers in a cool, well-ventilated area.

FIRST AID

Eye Contact

Immediately flush with large amounts of water for at least 15 minutes, occasionally lifting upper and lower lids.

Skin Contact

Remove contaminated clothing. Wash contaminated skin with soap and water.

Breathing

Remove the person from exposure.

Begin rescue breathing (using universal precautions) if breathing has stopped and CPR if heart action has stopped.

Transfer promptly to a medical facility.

PHYSICAL DATA

Water Solubility: Soluble.

OTHER COMMONLY USED NAMES

Chemical Name: Thiourea

Other Names: 2-Thiourea; Thiocarbamide

Not intended to be copied and sold for commercial purposes.

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Sinhon Chemical focuses on high-quality thiourea production and manufacturing.  The thiourea we produce has high purity, good quality and stable product performance. The annual production capacity is 20,000 tons, the inventory is sufficient, and the supply is stable. We also trade other products, such as molecular sieves, silica gel desiccant, aniline, methylene chloride, chloroform, sodium hydroxide, propylene oxide, etc. 

Excellent service, reliable quality, delivering more value. 

Contact us to start our journey of cooperation.

Email: info@sinhon-chem.com