### Page 1 

# Material Safety Data Sheet Ready Mixed Concrete



## Section 1

- Chemical Product and Company Identification

MSDS Name: Ready Mixed Concrete Synonyms: Ready mix concrete, concrete, Company Identification: USC Technologies, Inc. 755 Stockton Ave. San Jose, CA 95126 For information, call: 408

- 404

- 2013 or 408

- 510

- 8422 Emergency Number: 408

- 404

- 2013 or 408

- 510

- 8422 For CHEMTREC assistance, call: 800

- 424

- 9300



## Section 2

- Composition, Inform ation on Ingredients

Component CAS Number % By Weight OSHEA PEL

- TWA Respirable ACGIH TLV

- TWA Respirable Crystalline Silica 14808

- 60

- 7 20

- 85 [(10) / (%SIO 2 +2)] 0.025 mg/m 3
Portland Cement 65997

- 15

- 1 10

- 60 5 mg/m 3 10 mg/m 3 Fly Ash 68131

- 74

- 8 0

- 50 NA NA Amorphous Silica* 79631

- 86

- 9 0

- 30 [(80) / (%SIO 2 +2)] NA Iron Oxide* 1309

- 37

- 1 0

- 20 10 mg/m 3 5 mg/m 3 Aluminum Oxide* 1344

- 28

- 1 0

- 18 5 mg/m 3 1 mg/m 3

Calcium Oxide* 1305

- 78

- 8 0

- 15 5 mg/m 3 2 mg/m 3

Note: Components listed with an * are introduced as constituents of fly ash.

Concrete contains cement which is extracted from the earth ’s crust and processed using heat from various fuels. As a result, trace amounts (<0.05%) of naturally occurring potentially harmful compounds may be detected during chemical analysis. Portland cement may contain trace amounts of chromium salts or compounds, including hexavalent chromium, and other compounds such as nickel, potassium and sodium

s ulfate. Chemical admixtures may also be present in trace amounts.



## Section 3

- Hazards Identification

EMERGENCY OVERVIEW

Unhardened concrete is an odorless
, semi

- fluid, flowable paste of varying consistency and color. Exposure of sufficient duration to unhardened concrete can cause serious, potentially irreversible tissue damage due to chemical burns. First, second and third degree burns may occur without ob vious pain at the time of exposure

.

### Page 2 Potential Health Effects

Eye Contact : May cause immediate or delayed irritation
, inflammation , chemical burns and blindness

. Eye exposure requires immediate first and medical care to prevent significant injury.

Skin Contact (acute) : May cause dry skin
, irritation , dermatitis and severe chemical burns.

Burns: Exposure of sufficient duration to unhardened concrete can cause serious, potentially irreversible skin damage due to chemical burns. Skin exposures may be hazardous even when there is no discomfort. Third degree burns may occur.

Dermatitis: Unhardened concrete is capable of causing de rmatitis through irritation and allergy. Dermatitis may include symptoms such as, redness, itching, rash, scaling, and cracking.

Sensitization: Allergic contact dermatitis is caused by sensitization of hexavalent chromium (chromate) which is present, in sm all quantities, in concrete. The reaction can range from a mild rash to severe skin ulcers. Reaction can occur upon first contact with unhardened concrete or develop after years of repeated contact.

Inhalation (acute) : Cutting, grinding, scarifying or san dblasting hardened concrete produces dust that contains respirable silica and hexavalent chromium. Breathing dust may cause nose, throat, lung or mucous membrane irritation. Inhalation of high levels of dust can cause chemical burns to respiratory organs.

Inhalation (chronic): Risk and severity of injury depends on duration and level of exposure.

Silicosis: Repeated exposure to concrete dust containing r espirable crystalline silica can cause silicosis. Silicosis is a disabling and sometimes fatal lung dise ase . See Note to Physician in Section 4 for further information.

Carcinogenicity: Concrete is not listed as a carcinogen by IARC or NTP, however
, concrete contains crystalline silica and hexavalent chromium which are classified by both organizations as human carcinogens.

Autoimmune Disease: Some studies indicate that exposure to r espirable crystalline silica, without silic osis, or that silicosis itself may be associated with increased incidence of autoim m u ne disorders such as systemic lupus erythemas tosus, scleroderma, rheumatoid arthritis and diseases affecting the kidneys.

Tuberculosis: Silicosis increases the risk of tuberculosis.

Renal Disease: Some studies show indicate an increased incidence of chronic kidney disease and end

- stage renal disease in workers who have been exposed to Respirable crystalline silica.

Ingestion: Ingestion of small quantities of concrete is not known to be harmful howe ver ingestion of large quantities can cause chemical burns to the mouth, esophagus, stomach and digestive tract. Do not ingest concrete.

Medical Conditions Aggravated by Exposure: Lung diseases such as bronchitis, emphysema, COPD and pulmonary disease, o r sensitivity to hexavalent chromium can be aggravated by exposure.

### Page 3 

## Section 4

- First Aid Measures

Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Skin: Wash skin with plenty of water and pH neutral soap. Seek immediate medical attention for rash, burns, irritation, dermatitis and prolonged unprotected exposure to unhardened ready mixed concrete.

Ingestion: Do not induce vomiting . If conscious, affected perso n should drink plenty of water. Seek medical aid or contact the poison control center.

Inhalation: Remove from exposure and move to fresh air immediately . Seek medical attention for discomfort or if coughing or other symptoms do not subside

Notes to Physic ian: The three types of silicosis include:

Simple Chronic Silicosis

– results from long term exposures (>20 years) to low concentrations of respirable crystalline silica. Nodules of chronic inflammation and scarring provoked by respirable crystalline silica form in the lungs and chest lymph nodes. Symptoms may include breathlessness that may resemble chronic obstructive pulmonary disease.

Accelerated Silicosis

– occurs after exposure to larger concentrations of respirable crystalline silica over a sho rter period of time (5

- 15 years). Inflammation, scarring and symptoms progress more rapidly than with simple silicosis.

Acute Silicosis

– results from short term exposure to very high concentrations of respirable crystalline silica. The lungs become very i nflamed and may fill with fluid, causing severe shortness of breath and low blood oxygen levels.

Progressive massive fibrosis may occur in simple or accelerated silicosis, but is more common in the accelerated form of the disease. Progressive massive fibro sis results from severe scarring and leads to de struction of normal lung structures.



## Section 5

- Fire Fighting Measures

General Information: Concrete poses no fire related hazard. A SCBA is recommended to reduce exposure to byproducts of combustion.

Extinguishing Media: Use extinguishing media that is appropriate for surrounding fire

Flash Point: Not applicable.

Autoignition Temperature: Not available.

Explosion Limits, Lower: Not available.

Upper: Not available.

NFPA Rating: (estimated) Health: 2 ; Flammability: 0; Instability 0 : Special Hazard: ALK

### Page 4 

## Section 6

- Accidental Release Measures

General Information: Use proper personal protective equipment as indicated in Section 8. Placed spilled material into an appropriate container and allow it to harden before disposal. Do not wash unhardened concrete into storm water or sewage systems or into bodies of water.

Disposal Methods: Allow to harden and dispose of in accordance with Federal, State and Local regulations.



## Section 7

- Handling and Storage

Handling: Wash thoroughly after handling. Remove contaminated c lothing and wash before reuse. While cutting, crushing or grinding hardened concrete, m inimize dust generation through suppression and ventilation and wear all appropriate personal protective equipment as described in Section 8.

Storage: No limitations



## Section 8

- Exposure Controls, Personal Protection

Engineering Controls: Minimize splashing through concrete discharge flow rates

. While cutting, crushing or grinding hardened concrete, m inimize dust generation through suppression and ventilation methods.

Personal Protective Equipment

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 191 0.133 or 29 CFR 1926. 103

.

Skin: Wear appropriate protective clothing, boots and gloves to prevent skin exposure.

Respirators: No respiratory protection is necessary for unhardened concrete. When exposed to concrete dust, wear a NIOSH approved respirator and follow a respiratory protection program that meets OSHA's 29 CFR 1910.134 or 29 CFR 1926.103



## Section 9

- Physical and Chemical Properties

Physical State: Semi

- fluid, flowable paste Appearance: varies (u sually grey) Odor: odorless pH: 12

- 13 Vapor Pressure: Not available Vapor Density: Not available Evaporation Rate: Not available Viscosity: Not available. Boiling Point: Not Available Freezing/Melting Point : Not available Decomposition Temperature : Not available

### Page 5 Solubility: Slightly (0.1

- 1.0%) Specific Gravity/Density: 1.9

– 2.4



## Section 10

- Stability and Reactivity

Chemical Stability: Hardened concrete is completely stable. With unhardened concrete, avoid contact with incompatible materials

Incompatibilities with Other Materials: Unhardened concrete is alkaline and is incompatible with acids, ammonium salts and aluminum metals. Portland cement dissolves in hydrofluoric acid and produces silicon tetrafluoride gas. Portland cement reacts with water to form silicates which in turn react with powerful oxidizers such as fluorine, boron triflouride, chlorine triflouride, manganese triflouride and oxygen diflouride.

Hazardous Decomposition Products: None

Hazardous Polymerization: Will not occur.



## Se ction 11

- Toxicological Information

RTECS#: CAS# 7632

- 00

- 0: RA1225000; RA1425000 LD50/LC50: CAS# 7632

- 00

- 0: Draize test, rabbit, eye: 500 mg/24H Mild; Inhalation, rat: LC50 = 5.5 mg/m3/4H; Oral, mouse: LD50 = 175 mg/kg; Oral, rabbit: LD50 = 186 mg/kg; Oral, rat: LD50 = 180 mg/kg;

Carcinogenicity: CAS# 7632

- 00

- 0: Not listed by ACGIH, IARC, NTP, or CA Prop 65. Epidemiology: Oral, rat: TDLo = 2190 gm/kg/2Y

- C (Tumorigenic

- Carcinogenic by RTECS criteria

- Gastrointestinal

- tumors).; Oral, rat: TD = 91 gm/kg/2Y

- C (Tumorigenic

- equivocal tumorigenic agent by RTECS criteria

- Skin and Appendages

- tumors and Reproductive

- Tumorigenic effects

- testicular tumors).; Oral, rat: TD = 40 gm/kg/56W

- C

- (Tumorigenic

- neoplastic by RTECS criteria

- Liver

- tumors). Teratogenicity: Oral, rat: TDLo = 660 mg/kg (female 1

- 22 day(s) after conception) Effects on Embryo or Fetus

- fetal death and Effects on Newborn

- growth statistics (e.g.%, reduced weight gain).; Oral, rat: TDLo = 10280 mg/kg (female 1

- 22 day(s) after conception and lactating female 20 day(s) post

- birth) Effects on Newborn

- weaning or lactation index (e.g., # alive at weaning per # alive at day 4).; Oral,mouse: TDLo = 280 mg/kg (female 1

- 14 day(s) after conception) Speci fic Developmental Abnormalities

- blood and lymphatic systems (including spleen and marrow). Reproductive Effects: Oral, mouse: TDLo = 1200 mg/kg (female 6

- 15 day(s) after conception) Fertility

- pre

- implantation mortality (e.g. reduction in number of imp lants per female; total number of implants per corpora lutea).; Oral, mouse: TDLo = 1680 mg/kg (male 14 day(s) pre

- mating) Fertility

- male fertility index (e.g. # males impregnating females per # males exposed to fertile nonpregnant females).; Oral,

mouse : TDLo = 840 mg/kg (male 14 day(s) pre

- mating) Paternal Effects

- spermatogenesis (incl. genetic material, sperm morphology, motility, and count). Mutagenicity: Unscheduled DNA Synthesis: Human, HeLa cell = 6 mmol/L.; DNA Inhibition: Human,

### Page 6 Fibroblast = 2 000 ppm.; DNA Inhibition: Human Cells

- not otherwise specified = 725 umol/L. Neurotoxicity: No information found



## Section 12

- Ecological Information

Ecotoxicity: Fish: Rainbow trout: LC50 = 0.19

- 0.39 mg/L; 96 Hr; Flow

- through bioassay Fish: Mosquito Fish: TLm =8.1 ppm; 24 Hr; Highly turbid water Fish: Creek chub: Critical range = 400

- 2000 ppm; 24 Hr; Detroit River No data available. Environmental: In water sodium nitrite dissociates completely and under aerobic conditions the nitrite i ons are oxidized to nitrates. Physical: No information available. Other: Harmful to aquatic life in very low concentrations.



## Section 13

- Disposal Considerations

Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste. US EPA guidelines for the classification determination are listed in 40 CFR Parts 261.3. Additionally, waste generators must consult state and local h azardous waste regulations to ensure complete and accurate classification. RCRA P

- Series: None listed. RCRA U

- Series: None listed.



## Section 14

- Transport Information

US DOT Canada TDG Shipping Name: PT

- 1609 PT

- 1609

Hazard Class: 5.1 (6.1) 5.1(6.1)
UN Number: UN1500 UN1500 Packing Group: III III



## Section 15

- Regulatory Information

US FEDERAL

TSCA CAS# 7632

- 00

- 0 is listed on the TSCA inventory. Health & Safety Reporting List None of the chemicals are on the Health & Safety Reporting List. Chemical Test Rules None of the chemicals in this product are under a Chemical Test Rule. Section 12b None of the chemicals are listed under TSCA Section 12b.

### Page 7 TSCA Significant New Use Rule None of the chemicals in this material have a SNUR under TSCA. CERCLA Hazardous Substances and corresponding RQs CAS# 7632

- 00

- 0: 100 lb final RQ; 45.4 kg final RQ SARA Section 302 Extremely Hazardous Substances

none of the chemicals in thi s product have a TPQ. SARA Codes CAS # 7632

- 00

- 0: immediate, delayed, fire. Section 313 This material contains Sodium nitrite (CAS# 7632

- 00

- 0, >97%) , which is subject to the reporting requirements of Section 313 of SARA Title III and 40 CFR P art 373. Clean Air Act: This material does not contain any hazardous air pollutants. This material does not contain any Class 1 Ozone depletors. This material does not contain any Class 2 Ozone depletors. Clean Water Act: CAS# 7632

- 00

- 0 is listed as a Hazardous Substance under the CWA. None of the chemicals in this product are listed as Priority Pollutants under the CWA. None of the chemicals in this product are listed as Toxic Pollutants under the CWA. OSHA: None o f the chemicals in this product are considered highly hazardous by OSHA. State CAS# 7632

- 00

- 0 can be found on the following state right to know lists: California, New Jersey, Pennsylvania and Massachusetts. California Prop 65 No Significant Risk Level: None of the chemicals in this product are listed.



## Section 16

- Additional Information

MSDS Creation Date: 4/14/2011

No warranty, expressed or implied, or merchantability, fitness for a particular purpose or otherwise is made, except that the products herein discussed comply with the chemical descriptions on the labels. Buyer assumes risks of use, storage and handling. USC Technologies, Inc. shall not be liable for any incidental or consequential damages arising directly or indirectly in connection with the purchase, use, storage and handling of this product.

The information above is , to the best of our knowledge true and accurate and represents the best information currently available to us. However, all recommendations or suggestions are made without guarantee, since the conditions of use are beyond our control. We disclaim any liability incurred in connection with these data or suggestions. This information is not to be taken as a license to operate under , or a recomme ndation to infringe any patent(s). The observance of all regulations and patents is the responsibility of the user. No agent, representative or employee of this company is authorized to vary any terms of this notice